GPU driver support is not limited to CUDA. Devices that require binary blobs of firmware to work properly are not always exotic. Some examples off the top of my head that won't work with OpenBSD hassle-free is Vantage (LLL), Solaar ... but I haven't tested. I understand you finding it easier to work with and it's faster install speeds do pique my interest, yet you being on HN already puts your technical literacy on some low % of gen pop. OpenBSD may be comparable to distros like Gentoo, Void or Arch but certainly not out-of-the-box ones like Ubuntu. They serve different auidences.