As a Linux gamer with a Ryzen cpu, I think it’s likely just a correlation of people who are more tech-oriented, as windows and intel are essentially the “default” options for most computers you can buy, and the same (mostly) enthusiast circles that use Linux overlap heavily with those who build their own computers and may be more informed about hardware options, and how Ryzen has been beating Intel on price/performance essentially since launch

Of course, it makes perfect sense… they want the good publicity of saying they have ethics oversight, but don’t actually give them authority because it would prevent them from doing what they want to do (and know might be unethical)