So…this whole evidence point out by the author amounts to personal experience, and not even a kind of personal experience that is good for evidence. Smaller instances closing down isn’t the same as large instances closing down when it comes to adoption. Heck, there’s a recent report that shows the opposite of what is said here, with proper data to back it up.

https://www.deweysquare.com/wp-content/uploads/2023/06/DSG-Snapshot-of-the-Twitter-Migration-June-2023.pdf