I would buy from GOG too, if they provided Linux support in form of an official launcher. And if available also official Linux builds. Back in the days GOG did that, but they stopped doing it. And before someone comes after me, I know there are alternative launchers on Linux. But I don’t want to give GOG money for work others doing it for free. I don’t want support a company who only cares about Windows.

Did you mean 1MB? With correct settings, you get under 1MB Rust binaries and with even more compression using upx it gets to 300KB, probably less for much simpler applications. Rust applications aren’t that big of a deal as people make it to be; within reasons off course.