The tl;dr is that decentralization is no selling point for the average user and if the experience using Mastodon is any worse than using Twitter, people simply won't switch. And there are numerous big issues with Mastodon's usability that make it inferior to Twitter: That there is no proper way of exploring creators, that following creators is a hot mess, that Mastodon instances can block each other and thus make it impossible for their users to interact with each other. All those drawbacks come from being decentralized, while the only positive, not being ruled by a billionaire man-child, clearly doesn't bother people as much.
I disagree. I'm super tech savy. It takes time to understand Lemmy etc. and get what you want. I'm not against this, but let's be realistic, it isn't as easy as Reddit for example. This is fact not opinion...
I haven't been using it very long but I have not noticed any significant differences with Reddit for Lemmy. It seems exactly the same. You sign up, there's default posts and there's your personal feed where you can add and remove subs. Content is shoved in your face with zero effort. Response notifications in the top right. What is harder about it?