That might depend on where you live. Personally I don’t deal with thorns or sharp rocks, and don’t run low enough pressure to pinch flat, so I have no desire for tubeless. But I’m far from an extreme rider.
I also have a wheel with a KOM (light) rim. Nice wheel but you’re right, you need to find a 32 hole hub.
I think the 32 hole hub is really the answer to rim availability when it comes to muni. I don’t think we can get away from 36 hole completely though, as it’s more suitable for larger wheels.
I think this is the key. The people on forums like this are the passionate few, not really a broad representation of unicyclists in general.