In the referenced paper https://arxiv.org/pdf/2201.00094 in section 2 they give a couple examples for why not ray tracing. Also FWIW they used an RTX3090 in the performance comparison section.
they have MLAB in their performance comparison table, is that ray traced? from this blog i think it sounds like it there's a rasterized version and a way to use ray tracing https://interplayoflight.wordpress.com/2023/07/30/raytraced-...