If everyone carried on without any preventative measures the virus would spread exponentially....
How would that be possible when so many people have good immunity against Sars-CoV-2?
Unfortunately you make the same mistake as Kier Starmer and the Labour party in underestimating the extent to which we have immunity in the population.
and result in the worst case predictions of 1-2% of our population dying.
You are being disingenuous at best. Firstly not far off 1% of the population dies annually anyway. Secondly, the average age of a death with Sars-CoV-2 is 82. Thirdly, the infection fatality rate is likely to be at most 0.5%.
Therefore any response proposed by any political party or any other person should be proportional and take these factors into account
With minimal preventative measures such as social distancing, hand washing etc., the virus would still spread exponentially, albeit at a lower growth rate.
See above.
You'd still get the same number of deaths due to the virus but spread out over a longer time, so avoiding knock-on fatalities due to healthcare unavailability.
There should be no chance of healthcare unavailability given all those who are in the at risk categories have been vaccinated; are you denying the effectiveness of vaccines?
I've not been following the claims made by Starmer in respect of vaccine effectiveness but I would hope the Labour party would be prepared to agree that the vaccines are highly effective.
The more stringent measures you apply, the lower the growth rate, until the rate drops below 1 and the virus spread starts to reduce.
I suggest you look at seasonal endemic equilibrium models. There is no need to apply stringent measures now that we are entering the endemic phase.
But unless you get the growth rate below 1, you will always get an exponential growth in virus spread. Whether it doubles every week or every month, it would still grow and sooner or later spread to the whole population.
Repeating the same thing doesn't make you right.
As a result, the argument that you can balance the tolerance for deaths against tolerance for restrictions doesn't work. Unless restrictions are sufficiently tight to limit the growth rate to less than 1, you will see the entire population exposed to the virus and the maximum death toll.
None of your arguments 'work'; your arguments are based on misunderstandings and false claims.
Are any of these arguments made by Starmer and Labour? I'd hope not, but any political party making such arguments will not get my vote anytime soon.
Unfortunately our lack of effective test and trace (IMO due to lack of support for those isolating) meant the only tool to get the growth rate below 1 which worked was lockdown.
How do you explain that in Kent cases were increasing during Tier 4 lockdown measures and peaked during them?
UK-wide, cases were already declining before the imposition of Lockdown 3; see other threads where this is discussed in more detail.
The government tried pretty much everything it could throughout the autumn short of lockdown - a policy driven by the lockdown sceptics in the Tory party. But none of the measures worked.
This is a seasonal virus (and we are rapidly heading for seasonal endemic equilibrium with this virus); the fact cases increased at the expected autumn/winter season is of no surprise and was unavoidable and I would hope any sensible political party would realise this.