Car companies whose name is not Tesla have generally been pretty realistic in my experience because they're pretty much fine with continuing down the path of improving assistive systems (and incrementally developing EVs). They're fine with not having FSD so long as others don't.

With the somewhat exception of Waymo (which I don't really understand although it's probably related to internal incentives) the companies making the more outrageous claims are mostly companies who see FSD as a secret sauce that's essential to their business.