@detritus I use the term loosely, of course, but to me the essence of #enshittification is "lock-in + degradation”. No matter how bad something is to begin with, if it is deliberately made worse in order to extract a profit from a more or less captive audience, that's enshittification.
That, at least, is my understanding, but I'll let @pluralistic be the final arbiter. And if you want to propose a more specialized term like, say, “pessimization”, I'll go along with that too.