Lemmy still has a small user base. There's not a lot of people posting new threads. There's like... maybe 20 people (not counting bots) that are regularly posting content to this platform right now. And for what it's worth, OP is only posting one copy of each link, to this community only, so it's not even spammy behavior. It's all relevant to the community he's posting to.

If you have an issue with it, then post the links, yourself, before OP can. Be the change you want to see, instead of just whining and being nonconstructive. Focus on the content being posted, instead of the person posting it.

Op was encouraged to post the topics he wanted people to see. He's doing that now. I see nothing wrong with that.

How much are you posting? If near nothing you should delete your post.