We used to have earbuds that don't need to be charged because they had a headphone jack, didn't get lost so easily because they had a cord attached to a headphone jack, never lost the bluetooth connection because they had a headphone jack, and they cost less because they had a headphone jack. https://bsky.app/profile/daisyfm.bsky.social/post/3l3mfjc6sn62k
It's not rocket surgery that that having an extra hole makes water proofing a whole lot easier.
Nobody is saying that it's impossible to make a water resistant device with a headphone jack. Just that it's a whole lot easier (cheaper) to.
It's not an extra hole, just an extra connector. 3.5mm jack is literally just couple metal rings separated by plastic, it's extremely trivial to waterproof
It is literally a circular hole in the chassis, wtf are you talking about?
I mean that it's not some kind of gateway into the phone internals.