My friends are all pretty level-headed and good to talk to, but online things tend to get very tribal and center around these exaggerated points as if there's a referee keeping track of the points you scored on your "opposition".
I visited Catalonia once fifteen years ago, and so for a while I had an interest in Barcelona and Catalonian topics such as Antoni Gaudí. Now, I knew about the Catalonian independence movement, and the history of oppression by Franco and so forth. So it was no surprise that the nationality of Gaudí was controversial. If you put that he was a Spanish architect then someone would soon come along and change it to "Catalan architect" and of course, that could not stand more than a few days before a nationalist would change it back to "Spanish". So we compromised on "Antoni Gaudí was a Spanish Catalan architect", and this phrasing withstood most scrutiny, and we managed to tamp down the edit-war on that particular lead sentence.
Other nationalistic edit-wars of note include the naming of the FYROM (Macedonia and "North" Macedonia), Armenian genocide denial, the Israel-Palestine conflict, of course, and many many others.
The person had also made edits to some Russian rugby team, so I suspect it was motivated by both Scotland (narrowly) and Wales (heavily) beating England in a rugby competition that year :)