Reddit is just an empty framework that got filled by communities of humans. The shape of the framework did have some impact, but ultimately human nature is the biggest influence on the form that those communities took.
The Fediverse is a different framework, shaped a little bit differently but still basically the same. The same basic humans are building communities in it. I think all the smug "we're better than Reddit" stuff is going to look rather silly once the Fediverse gets anywhere close to being as big as Reddit is.