Very few folks use these "dive style" watches for diving. They mostly use dive computers. I do use the timing bezel on mine for walks, which is also old fashioned, with a FitBit on the other arm. Although the watch I showed does have real dive cred. Saw a test where it went past the 660 ft pressure test in a chamber. The crown assembly's sturdy feel is among the most reassuring IME. The crown simply has no wobble. Mine keeps as good of time as my Omega Seamaster 300m.
The point of diver's watches is reliable water resistance, not specifically limited to diving per se. Whether I go surfing, swimming, or snorkeling, I need a watch that won't fail. As for diving, a diver's watch is generally used as a backup. As for 100 m desk diving watches, you even take a chance by going for a dip in the pool or by taking a shower. Whatever suits you is fine as long as you realize the limitations and appropriateness of the gear. Also, the water resistance rating refers to static pressure resistance - slow immersion vs forceful immersion like when jumping into the water or when moving your arms rapidly through the water. That's why water rsistance ratings by depth alone mean little.
WR 30 m is splash water resistant- do not immerse
WR 50 m is slightly better and maybe good for a short surface swim in cold water, not hot water like when you take a shower, not jumping into the water
WR 100 m is the minimum for swimming and a little snorkeling, and for jumping into the water from the poolside.
WR 200 m is minimum for an ISO-certified Diver's watch. WR 300m and up is better. If you go scuba diving 300m and more is best. If you do saturation diving you want a diver's watch with a helium escape valve or the crystal might pop off.
The watch I have been wearing for water sports for the last 10 years is 1,200m water resistant. Redundancy is always good. Crown gaskets and caseback gaskets get replaced every 3 years along with a service. The cheaper option is to buy a Casio Frogman. It should be serviceable. Many surfers and people who do watersports use them. You are still looking at over $600. even though it's only a Casio.