[isidor3]

Users of cars pretty routinely replace seals that are under a lot more extreme enviroments and abuse than a phone without issue. All of the ones I've dealt with pretty much are "just a gasket and a few screws" Sure, there needs to be some design process to get there, but let's not pretend that doing this would be some unheard of technological advancement.

[xenadu02]

Cars are much larger and their seals are much larger. They consequently have much more play and far larger tolerances.

If you scaled the forces and subjected the car to the equivalent of dropping a phone on the floor it would be totaled instantly... forget about maintaining waterproofing.

Thus I stand by my original statement: people making claims like "just a gasket and some screws" have never designed a product under similar constraints and are making bad assumptions or straight-up Dunning-Kruger errors left and right.