LinuxCNC is rock solid. I am a career machinist of 20 years and have used it to run work horse production machines without fault for years. Setting it up can be a nightmare, though. The fact that the distro is Debian based makes the reliability amazing, even after power outages etc. Just make sure you have a dedicated GPU or weirdness can happen.
I don’t think anyone would have a problem with external hosting sites (catbox.moe, imgur, etc.). I do agree, though, posting a gif is problematic to do natively on Lemmy.