You're referring to Suggested Posts that can have that issue.
Trunk is more like people saying "Hey, I like to talk about this and that subject" and then you add a bunch of them to your Following, which fills your personal timeline based on your topics of interest and you go from there.
You and I are people that discover a following on our own but many others aren't like that. They are disappointed with what they see and the federated timeline is full of crap to them.
@humanetech
That is what hashtags are for. Maybe encourage ppl to search for hashtags until they have 10 followers or subscribe to 15, or until they say, close this and 'Don't remind me in future".
Discourse forum software does nice things to guide people. This might be what Fedi needs.
@dansup @grishka