What made everyone move to Bluesky or Threads instead of Mastodon?

Not really. In terms of engaging with posts, oh my god, absolutely it's worse. Twitter and its clones suck when it comes to engaging with things people post (but Mastodon at least makes it a bit better by increasing the character limit). But there's just something different about following a hashtag versus following a Lemmy community. Like for example, when it comes to getting highly detailed, up-to-the-minute news about things, Mastodon beats Lemmy every time. Additionally, I can see people's random, one-off takes that wouldn't really warrant a post on Lemmy.

I would argue too that it's not even true that you should just be focused on following hashtags, but rather that you should be trying to do both.

To me, Lemmy is the type of place I could kill two hours; for Mastodon, it's maybe 15 minutes, but that doesn't make it inferior, just a different use-case. It's pretty apples-to-oranges.

I follow hashtags I like, then see who the people are who use those tags, then follow those people.

I find that I discover people that way I would not have found otherwise.

It's worked well for me so far. I wasn't a twitter person before though, so I don't know if I have the experience you did for comparison.

If you start following hashtags, then you find interesting people. There are also curated lists that you can sign up for. That will introduce you to a lot of new content.

there's plenty of that going on, too, just not on as large a scale.

Then it's not the platform for you.

IIRC there's an iOS only frontend that fills that niche.

Also there is a trending section but its hidden behind the "explore" page, along with the search function. One of many reasons I really don't like Mastodon.

Put hashtags on your random shit and more people will find it