I went to the Mastodon website and clicked "Get Started" and was brought to a menu where I needed to choose a server. Many of them focus on niche interests, and it was not very clear what to do if I wanted to be a member of more than one of them. I'm a techie; I could figure it out. But it is too much to ask of the general public to wade through many niche servers they won't understand, e.g. the one for BSD fans and…
But consider twitter:
>Compare that to getting started on Twitter: pick a username and password, boom, done!
And then what? follow some celebs? Figure out if you know anyone? On mastodon you can use the local feed to find people interested in the same subjects (or same culture), and then you start talking. I've seen many people be surprised that within an hour or two on mastodon they've had more and better interactions than years on twitter. The experience once you're there tends to be quite good (from my completely unbiased and scientific viewpoint, of course)