The reason is that we want it to fail. My original comment was more emotive than descriptive. The system is horribly designed and a fucking menace on the best day, so short of direct sabotage, we’re doing what we can to force the bossmang to replace it.
Sometimes. It contains fixes for specific games and patches from wine-staging (the newest, testing branch) that are not included in Valve’s Proton releases, many of which have a positive impact on performance. The project’s overview is the best summary.