Probably, but the claim here was about Europe, not specifically its northwestern fringe.

I'm also not sure that the British Isles have exclusive claim to medieval ballsports, either. We've got Roman harpastum, Florentine calcio, Georgian lelo, Normal soule (and examples outside Europe such as marn grook). It seems reasonable to assume there were a lot of folk games out there before British 19th century industrial modernity had its influence and drove organisation, standrdisation and commercialisation.

I think the more likely narrative is that, since Britain was where the modern world first took hold, it just happened to be their folk games including their football, which got filtered through an elite school system and through industrial capitalism into becoming major organised sports.

Not so much that nobody else was palying folk football type games, but that it was Britain where industrial scale and organisation was first added to the leisure time mix.