I don't like the clickbait title at all -- Mastodon's clearly going to survive, at least for the forseeable future, and it wouldn't surprise me if it outlives Xitter.
Still, Mastodon is struggling; most of the people who checkd it out in the November 2022 surge (or the smaller June 2023 surge) didn't stick around, and numbers have been steadily declining for the last year. The author makes some good points, and some of the comments are excellent.
Mastodon is not a single entity, if mastodon.art dies tomorrow I would just create a new Mastodon profile on another instance.
Yeah, Mastodon use surged in 2022 and 2023, and yeah most users didn't stay around, but compared to the numbers before 2022, Mastodon has s big bump of new users.
Looking at two surges of new users seeing the vast majority not stick around and missing that a sizable chunk still stayed is missing the point.
This article would never have been written if the user increase didn't have temporary surges, that result would be the same number of users, but less brand recognition.
Mastodon is also not driven by the same kind of metrics as a centralized system, plenty of people can just run their own instance just for the fun of it, they don't need constant growth.
On the very end of the graph you can see it sort of beginning to stabalize, there was even a small uptick in the second to last point, and sure, the last point shows a small decrease again.
My point is that it is too early to call out for danger regarding mastodon, that is too alarmist and may scare new users from the platform, speeding up the end of Mastodon.
So untill we have a period of time without surges it is hard to determine user growth