I mean, I get annoyed when I see the same thing posted to two communities back to back, but 5 is ridiculous and extremely poor fediquite.
Edit: Seems the poster is some kind of spam bot. As one commenter pointed out, they seem to have spammed this to any community with “music” in the name. And it’s more than shows up in the screenshot. A LOT more.
The point of federation is to connect different servers. Lemmy is not one website. It is many different websites that happen to share data. A link being posted to multiple websites is fine.
Maybe if you’re seeing too many duplicate links, you’re subscribed to too many duplicate magazines/subs/servers.
That’s exactly the point. Most people are, too.