Six reasons Mastodon won't survive

apart from the fact that this is 6 years old , this reads like someone who didn't understand federation and just wanted and expected the same experience as non-federated sites

like he says that the fundamental point of the platform is a flaw that needs to be rectified (read, 'centralized')

also a complaint he had was that it didn't have celebrities on it, and considered this (and it not having a big userbase at the time) a flaw

I think he was looking at it as "the thing that wants to compete with/ replace Twitter"