>nother factor that could be at play is that all the non-Tesla EV makers have recently announced they will switch their chargers to NACS, but this will take a couple of years to roll out, so it’s not a great time to buy a non-Tesla since it already has legacy charging hardware.

This is a big factor and one I note to anyone I know who is thinking of buying an EV. You don't want to be stuck with a dead end tech. Buying a non-Tesla that hasn't already adopted the north american charger is a foolish move at this point. I'm sure there will be conversion kits for many models at some point but that's another cost and one you likely want to have a professional do. Best to either buy a Tesla or just wait a year or two.