Since you're just regurgitating LLM output I'll just leave you with a link showing that the world is a rich and varied place: https://randombits.dev/articles/number-localization/locale-l...
Regardless, it's goofy. Everybody should agree on one or the other, and it's too late for the other 73% to switch.
News flash: these people hurt you, too.
Life is finite, but unfortunately, bullshit like "Hey, let's use commas as decimal points, LOL" isn't.