They are reliable enough to use for FSD: https://youtu.be/hx7BXih7zx8 so i think it's reliable enough for park assist, summon etc. Yeah you're def right about the moisture sealing... it's been hit or miss on production tolerances
I disagree. regular navigate on autopilot and the FSD Beta are still very flakey outside of pristine conditions for me.
At this point, I either am expecting Tesla to go ahead with a camera upgrade with an expensive retrofit in the future, or FSD will never fully realize.