> I have seen people share into our slack channels

lol I had to do this at my last job. My manager would say I need more visibility, share it with X team since it touches on their work.

Then I'd have to be like "Hey we just launched this project/feature, look at it!" And nobody in that team's channel would comment on it.

I felt the exact way you're describing - I'm sharing something into a channel just to seem important.

I'm not sure how to reconcile the need for visibility, there's probably more subtle ways. Or alternatively being in the channel for a while and being part of discussions there rather than popping in just to give myself visibility when there's something worth showing.