The core point is that while there are regional differences none of those countries have anywhere near the same level of media influence as America, so yes, it is an Americanism like it or not. And when writing an article literally about Football for an international audience published on the internet then just call it by its name not the regional one used locally. It seems lazy not to.
Anyway it's just a pet peeve of mine (and plenty of others), it doesn't have to be logical.