Personally, I think that Lemmy hit rock bottom relatively shortly after the main Reddit exodus in early July, and has steadily improved since. And more than anything else, I attribute that to users leaving.
The thing is that at least some significant part of the people who have left are people who couldn’t or wouldn’t appreciate the threadiverse for what it is and instead spent their time whining about the ways in which it isn’t the same as Reddit.
And honestly, good riddance to them.
There are always going to be people who can and do appreciate the threadiverse for what it is. Those who are already here will stay and at least some of those who haven’t discovered it yet will, and will move here. And I wouldn’t have it any other way.