A lot of games received their ports during the Steam Machine era, used outdated technologies like DirectX to OpenGL translation, and never got updated, so it’s not surprising unfortunately.
The launcher is written in Java so that’s the universal binary unlike the other platform specific ones. Just like the (very) old original Minecraft launcher.
He streamed inside a public bathroom at E3. Then there’s also the thing where he cheated on his wife. I don’t know why people are so drawn to online personalities who prove over and over again they’re bad people with no intention to change.