How do you edit a NeRF? Let's say I want to change material of an object in the scene, or rotate part of it, or compose several into a new scene, etc. Or animate it. It's not really a good representation of a 3D scene IMO, unless all you care about is novel view synthesis, which is what it was designed to do.

Transforming it to a mesh or SDF is cheating, then it's no longer a NeRF and of course the same cons doesn't apply anymore.

This is still an active area of research. Seems like marching cubes alone are not enough IIRC. Do you have any links I can read for NeRf to USD for example? Saw something pretty good from nvidea a while ago but still not great — still a lot of loss.