I know a lot of people who are still on Twitter, because they feel they get a benefit from it. But what is the benefit of being associated with Elon Musk. He’s a truly horrible person with very right-wing/Nazi/Fascist tendencies. Now Musk is planning on getting rid of the Twitter branding altogether...
I have a friend that complains constantly about Twitter, how its going downhill and he doesn't agree with what their doing and all that. Yet, he insists on using it everyday. I've suggested Mastodon and he said that "everyone is on Twitter" and then complains about it. Couldn't believe that I deleted my Twitter account without a second thought.
I mean, it is not that hard of a thought process? Considering how many left reddit but have been complaining about it for years. As far as they were considering (including me), there was no better alternative. Your friend probably thinks the same. If the people he follows would go to Mastodon, they would follow. But as long as this people don't, then there isn't enough content there to be a viable alternative for them.