I don't get it. X is much, much better now that the insane levels of (one-sided) censorship are gone. There are actually different opinions now. I don't really see any objectionable content - it all depends on who you follow and what posts you like. You can choose to only see posts from people you follow if you prefer. And you can create different lists of users for different topics and only see post from a specific list. It's all up to you. It all feels more vibrant now.
Also, I have seen in other news that engagement has gone up a lot, though perhaps not the number of users.