To be fair, you could make a similar post out of non-Americans hating on American Football, when there's no real justification as to why one of these two sports should objectively be better than the other, at a professional level.
At an amateur/popular sport level I do believe football is superior though tbh, just due to its sheer simplicity. All you need is a round, approximately ball-sized object, a somewhat flat surface, perhaps 4 random objects for goalposts and you're good to go. For American Football, you need to have a very specific ball, and that's only the start.
Football can easily be argued to be more healthy and less dangerous phisically at an amateur level than its American counterpart as well.