I used to lecture at a tertiary level, so I'm totally on-board with the issue of plagiarism. There was never a case where the plagiarism was intended, and once a student was told of their error and how to prevent it, they never do it again.

Some actions just have a nasty edge to them. Downvoting is one such action.

Disagreeing with someone is fine; that becomes a source of engagement, debate, and conversation (although that can deteriorate too).

If you don't like something that someone posted.... move on. Stop following them. Mute them. You don't have to engage with someone/something you don't like.

'd love to see a discussion happening on the palnet forum here, so come on over...