Some while back I wrote a thread under another username, and was accused by a few members to have written a fake story because I used words that are much more commonly used in the US. For the record, I learned English as a second language and my secondary school teacher was from the US, I also spent my teens watching American shows and films. 15+ years in the UK and I still use flashlight, trashcan, gas, fall, intersection and a number of other words that got stuck in my head.
I have it happen since a few times to other people- today someone decided a thread posted by a user was done by chat GTP because it sounded 'American'.
Why are people so baffled by the fact that there may be American users on the site, or people educated in the US/international American schools, or just people who have learned English with the help of American media rather than BBC?