Hashtags do not replace groups.
No one moderates them. They’re easy to hijack and spam. And there’s simply no permanence to them.
Which is why, if you actually want to discuss something, it’s better to tag a group. For example, if you want to be part of an actual PC gaming community on the Fediverse, it’s better to tag @pcgaming@lemmy.ca than #pcgaming.
This needs to be common knowledge because people new to the Fediverse do not know about groups. Hell, I’d say people who have had Mastodon accounts for years still don’t know. And that’s a shame.
@fediverse@lemmy.world
Hrmmm… at a (strong) guess, PieFed does. You can follow anything, like a community, post, comment (even ones you do not own), or a user account. You would get Notifications triggered every time they post something, I believe. Including comments as well as posts, but again just a guess.
It’s a great way to follow a low-volume something or other! At higher volumes… it can get a bit much, but at least the tools are available, and you can always wipe all Notifications at once if need be.