as far as driver support they do have more. so lets look back to 1 year ago when everyone cried there is no drivers for win 10 and crap didnt work. and everyone had to buy new crap. so was it fixed or not. i dont think so.
Realistically, in most build environments you shouldn't have much of a bottleneck around the OS. Things to keep in mind as mentioned before are availability of (optimized) drivers. There are kernel/OS side optimizations you can customize based on your needs/skills.
I agree with whiskey-foxtrot . if it was me i would just grab windows and get on with it. unless you want a hobby for months and months even years to do what you want to do. windows isnt going to suck the life out of your mission here.
i wish you would just say i want to bit coin mine and looking to make as much as possible... then i would say grab a server board and download freebsd and setup up your sever since linux base has so much to offer on server options.