Allow me to propose to you the following thought experiment: had Elon Musk not bought Twitter, what do you figure would be the probability that mainstream media would be talking about Mastodon right now?
But that's not to say that my reasoning is to signal tribal affiliation.
I haven't moved before because I didn't know anyone on Mastodon. I now know quite a few, so moving is more valuable. It could be the network effect happening in reverse, and that's interesting for the media to report on.