[drdaeman]

What do you think is much more common, people swimming deep with (or drowning, or otherwise submerging - deep enough so higher ratings start to matter aka not just phone falling in a sink) their phones, or people looking to replace a battery after it naturally degrades?

I've swam with my phone exactly zero times. Haven't dropped it in any deep water. But I have a bunch of devices with batteries barely holding any charge. And I suspect it's the most common situation.