I can certainly tell you that Lemmy wont blindly follow what Mastodon is doing.
Good to hear.
They arent doing a good job for the Fediverse, for example they make zero effort to improve compatibility with other projects. Instead others are left to reverse engineer their federation logic.
Yeah. Plus, the sheer size of mastodon.social and the monoculture of Mastodon-based instances is just unhealthy. I wrote about it at length.