There was a longer comment here a minute ago with several paragraphs the reading of which felt like watching Trumpian politics at its worst: So much to disagree with that one doesn’t know where to even start. I just wanted to write a note and thank whoever removed it.
No, that's not from downvotes, that's from "flagging".
Personally I only flag spam and hate speech, but some people get really upset by certain posts and will flag them rather than (or in addition to) downvoting.
With enough flags the post becomes "dead" and then you can't reply to it, and it's hidden by default. It's possible to un-flag it with the "vouch" option.
I think flagged posts are often reviewed by dang (a moderator).
Trump has criticized Europe for not spending enough on defence and for being too friendly with Russia. His administration also stopped Nord Stream 2, a decision which later Biden administration reversed. So while this comment is horrible, I really don't see how could you call it trumpist.