I wouldn't take as bleak a view as RG, but a couple of things stood out in that post that perhaps need more elaboration/ discussion:
no politician wants to fully back public transport in urban areas as they don't want to upset the current crop of car users, and the pandemic has given them even more fuel (pun intended). Denying people use of the car is seen as denying freedom, so getting to the stage where we can provide an alternative choice for urban areas is something the taxpayer (which is generally all of us, I don't know why it's referred to as an exclusive club) doesn't want to do. "Why do I want to fund something I'm not going to use?", is the thinking and a cycle that is going to be exasperated by the fallout from lockdown and how taboo public transport will become in the next few months.
I think this is an argument that applied more 20+ years ago than it does now. Many large urban areas have been discouraging car use for decades with varying degrees of success. It is not just a case of pollution and road capacity - there is no point whatsoever in driving into a large urban area if you cant park the car when you get there.
I have made the point on other forums in the past. If, for example, you could get an extra 10 former motorists as passengers in every bus going into Bristol, you've not only reduced pollution and congestion but you've also saved the need to build a dozen muti-storey car parks.
Electric vehicles will do their bit to reduce pollutuon, but they will do nothing to address the other issues mentioned above.
... as most remain commercial, the companies providing our town and rural transport can continue to supply the minimum required. This leaves out the desired all day, all night available travel, another key reason public transport is seen as inflexible, and another reason it appears the case is not there to build something more permanent and greener.
There has always been a major difference between urban and rural public transport - it is nothing new. I moved from Chipping Sodbury to the Chippenham area in 1980, just before the bus equivalent of the Beeching cuts took place c.1982. The village in which I lived (West Tytherton) had 3 buses per day on 3 days per week only on the 232 service between Chippenham, Calne and Devizes. That had been the case for decades; it was never a profitable service for anybody, and it was only provided at all because of the through traffic that was also using the bus.
The same could be said of many railway stations. Nobody would have ever built a separate branch line to places such as Dauntsey, or Avoncliff, ot Tackley, or Bredon - they simply got a railway connection because the railway was on its way to other, more important, centres of population.
In major cities and large urban areas there is a market for public transport; in smaller towns less so and in truly rural areas not at all. Where the lines will be drawn will depend entirely on the individual circumstances of the areasd in question.