While the bat origin of Covid 19 is plausible, it hasn't been conclusively demonstrated. The gain of function lab leak is just as plausible, and equally unproven -- due to the Chinese dictatorship's suspicious lack of transparency and cooperation.

Lab escape is still bat origin, just potentially with a human assist (or human mistake with an unaltered virus.)

Sure, and they’re a large viral reservoir, but I’d hope we don’t think that’s a good reason to eradicate them. They don’t typically come into our homes the way mosquitos do; we go to theirs.