It's not just "some guy", it's a translation layer developer posting all of his findings on his git: https://github.com/HansKristian-Work/vkd3d-proton/commit/88e4f300cc0b5b6f0880c1233d562cf506b546fb
It's also verified by Proton users noting a marked increase in performance with just a code commit. I'd urge anyone not to listen to this troll and go have a look.
Netflix's 2023 2nd quarter revenue: 8.1 billion dollars BTW