User blog comment:MisterWoodhouse/The first specifics on the Unified Community Platform/@comment-5785681-20191026190411/@comment-24155515-20191028134906

Achievements is already deprecated to my knowledge (I discovered that when looking up info on it before disabling it on the wiki I admin). I've seen a few good wikis where it doesn't cause problems, but I've also (on the wiki I admin) noticed it was likely contributing to a swath of super-active editors making low-quality edits (and judging by the fact the editors in question left as soon as it was disabled, I think my hypothesis as to their motivation was right).

There is a wiki I'm semi-active on that uses it as one of the benchmarks for when to apply for contributor credit that's given on their related website (they encourage lots of different contribution and one type is good-quality edits on the wiki), so I think that while use cases like that could adapt to losing it, it would be nice to have a somewhat similar replacement system in that sort of loss scenario.