I think that Meta is trying to beat Twitter on microblogging. Using ActivityPub, like Lemmy and Mastodon, is just a fast and convenient way to start up quickly. The Fediverse will suffer with Thread invasion, as "colateral damage".
Follow people and hashtags, post interesting things, engage in nice conversations. The followers will come by themselves. There's no algorithm on Mastodon to suggest posts or follows, thank Athena!