English-speaking population is about 1.5 billion worldwide and 300 million of that is in the US (first language or additional language), so the US is about 20% of the world’s English speakers. The 2nd and 3rd countries with the most English-speakers are India and Nigeria, so factor in internet access, and the US is almost certainly >20% of the English-speaking internet.
Source: https://en.wikipedia.org/wiki/List_of_countries_by_English-speaking_population
If I played any Rockstar games, I’d be unhappy with their new anti-cheat too, since it needlessly blocks linux, but this isn’t the way this should be protested. If anything, this probably validates their decision.
The way this should be protested is to just stop playing. Stop giving them money. Stop boosting their month active user numbers that they can flaunt to investors. Hit them financially, since it’s the only hit they really care about. There’s a sea of other high-quality games you can play instead.