I mean, you practically asked for the downvotes. (Also, if that is truely the intent, then they’ve made some critical errors in UX design)

Up and down buttons started off as “like” and “dislike” buttons. That is what it’s always meant, and is likely to continue being how most people use them

It’s for content that you don’t want to see. The reason is your business. I think you’re confusing the etiquette rule that downvotes are not for opinions you disagree with, because we want people to be able to discuss different viewpoints without the hivemind casting them into the ether.

If there’s content you don’t like it is perfectly valid to downvote.