Cell phone companies design their phones to look good on TV when held that way and people who watch TV start doing that because all the cool people do it. And so forth.

I strongly disagree with this. They’re designed to look good no matter what. TV is an afterthought in the design of smartphones. But what do I know… I only worked on one of those projects.

Language evolves, yes, and here’s another chance to recommend an incredible book for language nerds: Highly Irregular: Why Tough, Through, and Dough Don’t Rhyme and Other Oddities of the English Language

But “enshitification” refers to a very specific cultural trend. The Ship of Theseus is someone trying to sound smart. These are not the same thing, even if some asshole tries to sound smart talking about the former. Others who are industry-enthusiasts use it as a shorthand for a very specific larger conversation.