He's more than capable of joining the fediverse, but he's also a UI/UX designer. I would say his main issue with the fediverse is the amount of friction between a normie being exposed to the concept and actually signing up and engaging with it.

You have to admit that it isn't the simplest thing to do. People have to understand the concept of the fediverse, find an instance that will accept them, sign up (with confirmation required from the instance mods) and then find out how to find communities that they are interested in.

It's not about whether a tech-savvy person can figure it out with some effort, it's about whether normal people can transition away from a monolithic, streamlined, social media to it.