Yes. In fact the sw8 fixay "scene" is on life support. But the choice to ride a phiksie just 'cos that is what you are into is still available. Its what I do.
I'm sorry but I pretty much disagree with everything else I think you were trying to say. In fact bigger tires are a thing now - there are plenty of easily findable big clearance SS/FG bikes built around them if you just look. Good luck...