It's such a strange thing to get hostile about. Ironically, it low-key bugs me that we put the dollar sign before the number it's indicating. "$64" is read as "sixty-four dollars," not "dollars sixty-four." So why write it like that? (Not rhetorical, I really want to know. I tried looking up this question to find out the answer, but haven't found anything conclusive.) Putting the currency symbol behind the number makes more sense, like how some countries write the Euro. (Which also explains why some people might not intuitively place the dollar sign before the number - it's their native convention and it follows clear logic.)
So maybe the point was ignorance or fear of the foreign? Or a misguided attempt at English language purity? Or they're a former Redditor who hasn't quite shaken off the Reddit "pointless, hostile hot-take" mentality?
Oh no, I just noticed that their username itself is a cry for help
Quick! Someone in Canada go check on OP!