Yet nobody really showed how to solve p2p in a way that supports: moderation, not downloading massive amount of data, account recovery, safe protocol upgrades. For example scuttlebutt exists and the initial connection involves "This “inital syncing” process can take up to an hour and use a fair amount of data.", you can't lose your keys, and unless something changed, moderation is still just wishful thinking "Presently, there is a "flag" feature, which is an extremely strong negative signal. If somebody is behaving poorly, feel free to flag them."

I acknowledge that Mastodon is not perfect, but raising that as "badly designed and engineered" seems weird, when it's the most decentralised, actually working solution we've got.