So go swimming for an hour with your Apple watch. I dare you! I have no worries about doing this with my water tight Casio. Casio has been in the watch business for ages so knows how to produce a time piece that will not go kaput when you go swimming for an extended time.
BOGUS! WATCH! by APPLE!
Dennis? I hate to break it to you, seeing as you are so convinced of your position, but being water resistant is not one of the prime definitions of a time piece or even a smartwatch. There are billions of watches in the world that are not water resistant even to the standard the Apple Watch meets. Live with it.
Take your Casio down to 300 meters for over the length of time it is rated for. . . and it will fail. Oops. Too bad. It's not "water tight" because it's only rated for 200 meters. So sad your BOGUS WATCH by CASIO isn't a watch. . . by your definition of not being "water tight" under your strawman criterion.
Ooh, oh wait. I know. Drop it into a pool of molten lava. Does it survive? NOOOO! My definition of a REAL watch is that it has to survive up to ten minutes, keeping perfect time while immersed in molten rock. If it doesn't. It's BOGUS! WATCH by CASIO!
See, Dennis, two can play at this game. WHEE! Fun. OOOH! Got a couple more. . .
Does your Casio survive being stomped on by sixteen Clydesdale horses and then run over by a fully loaded beer wagon? How about passage through a Black Hole???? If it doesn't it's not a real watch! It's BOGUS! WATCH! by CASIO!