I suspect the majority of "SD corruption" on RPis is due to bad power supplies or EMI causing the system to misbehave (and write erroneous data to the card) rather than actually exhausting the card's write capacity.
That's been my experience. The Pi 3 was notorious for killing SD cards, for instance. I know one guy who eventually just moved all Pi 3 installations he made over to USB sticks because every Pi 3 he used would just kill SD cards at random but far faster than they should have. Not many write cycles at all, just surged the cards or something.
