Based on comments on local Facebook groups, I think there are two reasons why it's made a story:
- As I am sure you know, the route the number 5 takes was changed last year in response to buses struggling to pass each other in the same area. From comments at the time this never used to a problem but has become one due to increased car parking on the road in the area. This was covered in the local media too, though I don't THAT much was made of it. But I guess the same thing happening again has ruffled some feathers.
- Again as you know, the U2 bus route was changed to run through this area a few months ago which reintroduced the problem above. What I think is actually causing the complaining now though is the the U2 is mainly a student service, and there is a lot of local hostility to students in the Twerton area - basically students and the universities seem to get blamed for everything. I suspect if this had been two 5's making the same maneuver, even considering point 1, it wouldn't have been as much of a story either. There has also been a fair bit of complaining about some of the school buses being canned, with the U2 tacking their places, but with school kids struggling to travel due to number of students using the buses and the poor reliability of them (though I think both of those issues have gone away now) and about the U2 being double deckers, so I suspect part of this is also a general whinge about the U2.
Basically what DanTrainMan says below. If you live on or near the 73 route at the moment, you have a pretty good link to either station. Ok the services do often get caught up in the general Bristol traffic, and the odd bus gets canned at the centre (either due to traffic or driver issues) but the options are there. By removing a quarter of the buses the 73 provides, you not only reduce the usefulness of the service but also increase the chance that you will be caught with a service terminating early. Add that to the points I made of getting from Temple Meads to some places (as the 73 is the main bus someone from Temple Meads heading to Stokes Croft / Cheltenham Road / Gloucester Road would use) and from Parkway to town (as the 73 is the only regular bus for that route).
Exactly this. The Temple Meads end used to have pretty good links but that has been cut pretty heavily lately, and the Parkway end only has the 73 as a choice anyway.
And that has been my experience recently too during the Filton Bank blockade, I've been using the 73 to get from town to Parkway and back and it is easier than faffing around with the replacement buses, getting to Temple Meads then having to get from Temple Meads into town properly. Of course it does depend where in town you are going, but for a lot of the city, Temple Meads just is not well located so being able to get the 73 from Parkway into town was very useful.
Most of the time the time taken by the 73 means any benefit is negated, but if it is easier / quicker to get a train to Parkway (either because of location, or because of replacement buses) or your destination is a distance away from Temple Meads, then the 73 can be a good alternative (that will be made less useful if the frequency is reduced thanks to a separate service that won't even call at Parkway!)