To me it's reading from different perspectives and other's writing style. It's really important when it comes to political stuff or anything else that you need to base a decision on.
But I think it applies even just to plain articles about a niche you follow.
Like, maybe some new GPU features get released for Linux or something. Gamingonlinux might cover it from a Gaming perspective whereas Phoronix might focus more on the hardware aspect of things and the original blog post or changelog or whatever might just give a mostly a list of changes and a description.
I tried telling OP that they weren't promoting small instances simply by using them to post to other instances because most Lemmy users are already on their chosen instance to begin with just yesterday. I also told them that they were just making it more difficult for users to curate feeds since OP makes it next to impossible to block. OP didn't care.
Dingding! Absolutely correct!