Yes, obviously the second comment was written by a non-US person. Nobody is trying to say otherwise.
Your original comment starts with pointing out that there isn’t just US English, and quite rudely so. Again, nobody is trying to say otherwise. The third comment was just a US person clearing up the non-US person’s conception about the usage of words in the US. So you pointing out that there are people outside of the US, who use words differently than people inside the US was entirely unnecessary. That’s what most people are taking issue with, I think.
Again, it’s kinda funny how much effort you’re putting into this. It feels a lot like you’re just trying to be correct in some way, instead of just admitting that your first comment was out of line. Welcome to my block list, and goodbye.