Knutsford and Northwich are small towns in rural Cheshire, surrounded by farmland. No way could they support a high frequency Metrolink service to Manchester.
I notice TfGM's proposal for tram-trains to Greenbank involved the services not serving Ashley, Hale, Plumley or Lostock Gralam. I think their second proposal for Knutsford only was for an all-stops service but included a proposal to relocate Mobberley so it could act as a Park & Ride facility. The reality is if everyone living in Ashley used a Metrolink service every day it would still get low loadings compared to Timperley.
Fares going up is called inflation. It happens on the real railway too (to shrieks of horror from the press every January). It may be that Metrolink fares are higher than you think they are worth but that's beside the point; Metrolink paid for itself pre-pandemic, suggesting that the cost is actually working well.
There's inflation plus in the case of Metrolink fares have been restructured twice.
A few years ago it was cheaper to buy a through ticket to a Metrolink station or zone than two separate tickets, that has changed and it's now exactly the same price. So a ticket that was around £7 a few years ago is now something like £11, rather than the £8 it would be with inflation.
Also Metrolink have standardised their fares and now price by zone, for some people that means their fares have dropped in relation to inflation, for others it means fares have increased a lot more than inflation.
I think it was also the case that Oldham line fares increased by around 50% following Metrolink conversion, compared to what they were pre-conversion
You then suggest that Metrolink numbers are increasing because the network is growing, as if this is a bad thing. Why do networks grow? Because they're unpopular? Nope. Metrolink has managed more extensions in its lifetime than line reopenings in the north of England since the millennium and vastly benefited Greater Manchester.
I'm pretty sure the Oldham line conversion was to save money long term. Saving money doesn't always mean a better service is provided, if it was than George Osborne's austerity measures would have been welcomed by everyone.
I'm not sure of the relevance of heavy rail reopenings compared to Metrolink. There isn't one Metrolink service which runs entirely on an old British Rail route and if there was a street running tram wouldn't be the best vehicle for it, even if the line was more suitable for light rail than heavy rail.
The biggest losers have probably been those in Cheshire but it is frankly churlish to complain about a slightly extended journey to central Manchester when millions of Mancunians have an improved service (and, by the way, it's their town - you don't live in Manchester (I assume) so why should commuters from wealthy Cheshire be prioritised over people who live there?) For context, I fully support better services for Knutsford et al., but blaming Metrolink for infrequent trains isn't entirely logical.
I was talking about people who use the Altrincham Metrolink line and live on or near that line becoming less satisfied with the service over the past few years earlier. I only mentioned Knutsford because you mentioned it in your analogy.
That said, I was lucky enough to grow in a city with a fantastic light rail network (Newcastle) and am well aware of the benefits of light rail in general.
I've only used Tyne & Wear Metro once and the impression I got it's more like a small scale London Underground than a small scale Metrolink.
I'd suggest that your opposition to Metrolink seems more ideological than pragmatic - 'dark-tinted spectacles', if you will - you prefer trains to light rail. I've tried both, and in urban areas, metros and trams are by far the better option.
I'm not against Metrolink. Trams can be very useful in some instances but they aren't a solution for all suburban railway lines around Manchester. A German city the same size as Manchester would probably have systems similar to Metrolink, Merseyrail and Tyne & Wear Metro all serving the same city. If 'Metrolink' meant a tram, a tram-train or a suburban train, depending on the route, then converting lines to Metrolink would have a whole different meaning.
Well its a good thing we are currently spending huge sums on a scheme that's primary purpose is to remove passenger trains from the WCML!
The scheme that's going to be finished in 2035-2040? New Metrolink lines shouldn't take 15-20 years to plan and build, so if your proposal is to convert the Northwich route once HS2 is serving Manchester then alternative proposals need to be looked at now, as people won't be happy about waiting that long for improvements.
Also worth remembering you haven't thought about/mentioned what's going to happen to the Altrincham to Stockport and Northwich to Chester heavy rail services in your proposal to run trams to Northwich. I don't think changing twice to get from Delamere to Stockport would be an attractive option for anyone! If you would run tram-trains to Chester then there's no point in doing a full conversion of Altrincham to Northwich and creating problems for freight in the process.
There is also the uplift from Hale to think of.
It was reported, not that long ago, that the Stockport to Chester route has a good business case for AC electrification. What would the cost be of obtaining dual-voltage tram-trains and undertaking the work required to allow trams to turn back at Hale, rather than continuing towards Knutsford? Also note that currently the Metrolink platforms at Altrincham are terminus platforms so infrastructure changes at Altrincham need to be factored in for that short extension.