Well hashtags clearly don’t work quite as well for discovery, which is why there is demand for starter packs. But what happens if other backends don’t implement it? Then people on the other instances, that is not mastodon, doesn’t have a way to opt out.
Hashtag is only usable for small contained community. Some instance already too big that hashtag is not work.
Especially multi language instance. Some word or phrase on hashtag can have multiple meaning depending on the language.
Well hashtags clearly don’t work quite as well for discovery, which is why there is demand for starter packs. But what happens if other backends don’t implement it? Then people on the other instances, that is not mastodon, doesn’t have a way to opt out.