Because to me, they seem like de facto "Agree and “Disagree” buttons, whether or not it was the intent.
They should be “this is worthy to be seen by many” and “this is not”. Sometimes that also overlaps with my agreement with the post.
This is how I use the vote arrows too.
I think I’ve gotten a little idealistic since moving to lemmy because I definitely used the votes as agree/disagree on Reddit, because it was clear that was what the hivemind decided it was for, who was I to argue.