But it isn't. Hardware and software support for a platform is decided exclusively by the hw/sw vendor. That's why I support the ones who do.
Does Linux make drivers harder to write than Windows or macOS? No. In fact there are many, many spaces where development is by far the easiest on Linux. Yet those companies choose that part of the market is irrelevant to them.
You might not care why there's no drivers for your joystick and use Windows, but it is 100% the blame of those companies, there's no debate about it.