Apologies if I wasn't clear.
1) I didn't say it was an Apple salesperson. It was a Best Buy associate/salesperson if that really matters.
2) the reason I felt I should have been corrected when I expressed that the Life Proof case wouldn't be necessary anymore is because the associate was made aware that I used the older iPhone in humid and wet environments and intended to continue to do so. Hence the need for the Life Proof case; I agree though, it's "a purely personal choice," but also necessary under those conditions. So, knowing my uses and intents... why wouldn't a knowledgeable sales associate correct me if I'm clearly wrong? Obviously I make a couple assumptions here: a) the associate was knowledgeable about the iPhone X and the specifics around the water resistance feature. That is the point of talking to associates yes? They are supposed to be SMEs and assist customers in making the right choices that fit their needs. b) the associate was actually listening to me when I mentioned how I used my old phone and intend to continue with the new phone.
3) I agree with everything you, and others, have said about water damage as it pertains to the warranty coverage. I was never calling that into question. Maybe my utilization the warranty timeframe to my opinion that "prominent features" (which imo it is) "should have some expectation to last half, if not the full duration, of the warranty" wasn't written clearly enough. My point is that I expressed what I wanted/needed from my new iPhone... and those wants/needs weren't met because I wasn't informed that the iPhone X water resistance feature did not equal the same protection that is provided by a Life Proof case.
I hope that was clearer... thanks for responding/reading.