I mostly follow people, not hashtags. If I follow you out of nowhere, it probably means that someone I follow boosted one of your toots, and I liked it. So I follow lots of friend-of-acquaintances.
Very-specific hashtags are usually fine, but many of them are way too spammy. Like, # linux is unbearable.
#feditips? Or maybe I'm the one using Mastodon wrong.
(Copy of a 2023-12-25 pinned post from my old account)