A robo-taxi is private, arrives when you call it, and goes directly from where you are to where you want to be. I don’t see the similarities between that and bus.

A good public transit system leaves from within 5 minutes of where you live and goes to within 5 minutes of where you want to be in any town of more than like 40k people.

A good public transit system is also better for the environment, makes traffic less awful, and is generally just preferable to robotaxi bs.

from within 5 minutes of where you live and goes to within 5 minutes of where you want to be

That’s technically true where I live but it means having to wait for a local bus at each end of the trip, and that ends up being slower than walking.

Sure, but I cannot imagine that Elon’s newest toy would solve that. It still needs to be dispatched from somewhere. Obviously, it would solve it, if you splurged on tons of robovans, much like you’d solve it, if you splurged on tons of buses.