If you want to get picky, Xwitter didn't enshitify as laid out as a concept by Cory Doctorow. The best example is probably Amazon which went from being insanely user friendly to lock in users, to supplier-friendly and increasingly less so for users, until it had squeezed and shafted both groups. That's enshitification and it doesn't apply to Xwitter. They had problems to make money before a certain somebody bought it. They've been bleeding users since the eventually Nazi saluting manbaby bought it, who then wanted to sue advertisers who refused to buy ads on his service. There was no user lock-in and then a supplier lock-in. There was just shit. All their current problems are man made. By one specific man.