Enshittification names the problem and proposes a solution. It’s not just a way to say ‘things are getting worse’ (though of course, it’s fine with me if you want to use it that way. It’s an English word. We don’t have der Rat für Englisch Rechtschreibung. English is a free for all. Go nuts, meine Kerle).

Also, as a note, enshittification being a process it can still be pretty clear when you are in the midst of it, rather than just valid to use at the end. this is most likely where you see most of the “misusage” of the term. regardless, the rot is absolutely visible to people, and a dictionary’s job is to catalgue woros as they are used.