Did you get "disabled" or "degraded" with the annoying beeps? I have gotten the latter a few times, and the car just slowed down a little. Same thing, light rain otherwise reasonable conditions. Have not seen the former."FSD disabled on bad weather" on very slight drizzles at 6am (semi-dark) and it's not even pouring... persistently nags me to touch the steering
so it's not self-driving material and not robotaxi material in those conditions
I do not doubt that it is not robotaxi level now-- the number I throw out is "90%", and it is going to need to be 99.999-99.9999% to get to level 5. Each order of magnitude is a similar level of complexity to achieve, so 5 orders of improvement will require several years optimistically.