Tesla Vision fails as owners complain of Model 3 cameras fogging up in cold weather
(www.notebookcheck.net)
and submerge the battery.
So why wouldn't the battery be sealed? Why is this a mode of failure that you believe is somehow acceptable? Short of the car going the route of a particular 500k P1... Why wouldn't we expect the batteries to be sealed if they're that sensitive to water ingress?
You realize that outside has a lot of water? And it's pretty normal for some of that to get on the underside of your vehicle... Why wouldn't tesla as a car design/manufacturer account for that and take reasonable precaution to stop water ingress on the battery? You even hear of an ICE car doing this short of driving into a lake?