The enshittification is carried over from other products. They're meta, so anything they launch is partly along the path already, because they can artificially boost the launch numbers with cross-platform promotion, and because everyone already knows what assholes they are, they're starting off with a lot of goodwill lost.
Basically, just slapping a new name and a new account creation process on some new features in their social network, is not enough to make it a new network.