I stay on Twitter, because there are a ton of accounts I follow that post things that interest me and that I learn from, in particular Python and related frameworks. But also programming in general plus much more interesting things like machinelearning and AI.
I love the Godot project, and it's super fun to follow the #GodotEngine tag, you see so much amazing creations and tutorials people post. And Blender3D.
Those are just a few examples and only IT, I also follow up on things that happen in cities where friends live, what is going on in their lives and what is happening in their cities.
To me Twitter is a huge treasure trove of information.
And this is probably going to sound arrogant, but I really don't care for your high-horse posts about departing Twitter (or any platform), because from where I stand it's because of your own inability to filter the things you like and dislike.
I don't care who owns Twitter, I care about the people who create content that interest and inspire me. As long as they keep doing that, I will continue to be a happy follower.