I can't actually tell what the parent's politics are. "40% of Americans don't believe Biden won the election" seems like a left-leaning talking point while "protests at Kavenaugh's house" seems like a right-leaning talking point. I think it's a good thing that he wasn't transparently political.
I downvoted because the apparent argument ("the US has these imperfections, thus it follows that it ranks low among countries") is a specific incarnation of the enumeration fallacy that is both obvious and frequently employed. If this isn't what the parent intended to communicate, then he can take my downvote as a cue to be clearer in the future. My downvotes are intended as (albeit very low-resolution) constructive criticism, not ill-will or petty disagreement.
