It sounds to me that you do not know what "beta" means. This was a lot of work to complain about something. I'm glad Elon had the guts to let us test this, knowing there are people like you around.
Come on! Of course he knows what beta means. But it shouldn't mean intermittently bizarre, occasionally dangerous, or sometimes totally unpredictable. I think there are enough reports of serious dysfunction - mirroring what the OP describes - that Tesla needs to either fix this soon, or turn it off. You don't have to have it behaving badly for everyone much of the time for it to be untenable. You only need it to behave badly some of the time, for some of the users. This is, after all, a safety issue, no?