It was not a joke, I’ve worked on Windows and Linux for decades and I’ve worked on Symbian OS and Android as an OS engineer. With the right hardware and stable drivers neither crash. Anecdotally (which admittedly proves nothing) my gaming PC’s only ever crashed because I had bad RAM, which i diagnosed with memtest86.
It’s not the operating system. This is the weakness of Windows/Linux - the many many vendors of PC components and badly written drivers. It’s not the operating system’s fault as such, unless you count the OS’ fault for not running a microkernel with drivers in a less privileged ring like Symbian OS did.
Now, the UI freezing and having weird random slowdown that’s another thing and one of the reasons I prefer Linux. I’m very grateful for Valve/Proton that I have been able to ditch Windows completely now.