Who / why puts a downvote on almost each new post on r/selfhosted?

I haven't really posted a lot to r/selfhosted (or Reddit in general), but whenever I did, there was always someone who voted my post down in less than 30 minutes after it was posted. Maybe because of this (maybe because they were actually perceived as low quality posts), these posts never received a lot of engagement with their 0 scores.

Today I've made a little experiment and posted the same article both here and to r/selfhosted. On Lemmy, it received a few comments and some upvotes, but over at Reddit, it was promptly downvoted to oblivion.

I've never really used "New" on Reddit, but I've decided to take a look at it, and to my surprise it looked like r/selfhosted's New page was full of genuinely helpful posts, but I never got to see them, as their scores were all zeroes.

What gives?