The growth-hacking folks around here should realize that from the perspective of the Fediverse there is no such "contest". This is probably the biggest difference why Twitter is by no means an alternative to Mastodon. There's no need to grow at all costs, move fast and break things, do crazy things to get engagement levels up, no commercial incentives, valuations, VC and shareholders to satisfy. The Fediverse is a network created by people, for people, and it is noticeable in the culture.. if you stop the frantic growth-hacking and take the time to discover it.