Worth noting that the recent Infrastructure bill passed under Biden includes $108 billion for public transportation (Link). This is much larger than the $7.5B set aside for electric vehicles.
As much as I despise our car-centric infrastructure, climate change is a large enough threat that we should seriously consider and pursue multiple avenues of decreasing our emissions as fast as possible. Fully transitioning away from auto-dominant transportation in the US is, frankly, not realistic in a timely manner with the public support and resources available. Not only will transportation infrastructure need changing, but even the design of our cities. So while we should pursue broader public transportation, we should also pursue other initiatives with high likelihood of broad acceptance and rapid implementation. Electric vehicles seems to be one such initiative.