So on LinkedIn dot com (a site which continues to be the best platform for promoting content), I asked why people there still used Twitter, and if they had not tried or started using Masto/Fedi, why?
I have about as many followers there as I do here, so it's not no reach, but by no means, like, "influencer" scale. Anyway, the responses were amazing.
There have been two major themes that have emerged in the replies.
Access to resources: some infosec, but actually most replies mentioned cryptocurrency??
Censorship. They feel that (barf) X does not censor anyone, while other platforms will.
The second of these is deeply disturbing, not just because it is factually inaccurate, but it speaks to a mentality that sympathizes with the sorts of material that largely does get deplatformed here—in other words, hate speech.
There is a ton of selection bias happening in this sample, so take this as anecdote, not data. Still, I am alarmed to discover the number of people who have been hoodwinked by Musk, especially regarding "free speech."