Ask HN: What's a healthy submission pattern on HN?

I once read a top comment putting down a submitter because he only submitted his own stuff.

In submitting other people's stuff, I find I'm always late after a quick search. Is it a game? If it's been posted but didn't gather much attention, or it has been years, is it fine to post again? Obviously there are outlier articles, and those black swans are the real gems, as opposed to your average big/niche media article. But I'm not exploring the depths of the web everyday, most days I get most of my reading from the curation HN is already doing. I'm spending my every day building stuff and writing stuff.

My stuff isn't likely to be posted by someone else. If most people posted their own stuff, wouldn't we get to see more outliers while the unremarkable just wouldn't trend? Is it looked down upon to mostly/only post those?