I can't help but feel that many people who now work remote and therefore don't need to commute suddenly are all for moving to mass transportation...that other people will use to get to work.
I'd imagine the spike in car prices over the past couple of years contributes as well. A car is an expensive investment that eats a huge part of your income just so you can participate in society, and I'm sure plenty of people feel the pain of this.
The solve for is one or more of these:
1. Make cars cheaper, but various market and regulatory forces seem to be conspiring against that
2. Make cities cheaper so you can move to good transit, but housing isn't in great supply there
3. Make public transit better and broader so more people can use it, but this faces opposition from people in the suburbs and exurbs who have car-centric assumptions baked into their lifestyle
1 is a multilayered problem with a lot of entrenched interests, so it's hard to solve. 2 and 3 are persuasion issues first and foremost, and the persuasion battle can be a lot more localized. So it doesn't surprise me that people are fighting those battles.
EDIT: Napkin math plus some searching said it's about $9,000 a year to own and operate a car on average. $750/month to participate in society. That's 8 annual fares for Pittsburgh's public transit, by way of comparison.
If you can get a beater for $1k and some insurance, you're basically down to gas (when the beater dies, you get another one or fix it).