They're good outliers to cut out from a sample set. If you want to use the survey as a developer to determine what your audience looks like, how much merit is there in factoring in a player base that mostly only plays Dota 2 and PUBG for major patches or something? And don't forget that the other way to look at that sample set is that for every Steam Deck customer out in the wild, you can double it to find how many Linux users there are, which is a number in the millions.