There are a lot of reasons why. Mastodon apps are not pretty. The logo is not attractive. The signup where you need to pick the server for some reason is confusing. The reputation Mastodon already has among the general public, that it’s the place for Linux enthusiasts, is not doing it any more favors.
You say that the algorithms have ruined everything but it’s just not true. Discoverability is dead on Mastodon. The platform doesn’t suggest me any new people to follow. The vocal minority against the recommendation algorithms is just that, a vocal minority. Recommendations are useful if they are not obtrusive.
I’ve been trying to keep my Mastodon account active for two years and I’ve been posting some random shit the same way I did on Twitter. I’ve been looking for some fun idiots but there are none, it’s all uptight serious people who are honestly pretty insufferable to read. I deleted my Mastodon account half a year ago and the one thing I appreciate is how easy it was — just a couple of clicks and you’re done.
Not always, Apex Legends added a 3v3 Arenas mode on smaller maps way after the initial battle royale release.