Yes, I suspect a lot of people would say that upvoting is an agree button. I don’t believe the up and down buttons are agree/disagree buttons. I attempt to use them in accordance with what I believe is their intention and what promotes the most civil discussion. Doesn’t really explain why I can’t see the upvotes, though. It is perhaps a moot point (or explains it better) if everyone is not on the same page as to (what I understand to be) the intended purpose of said buttons.