Source 2 Hammer: why it's not possible fully compile map without RTX in CS2, but possible in s&box?

[st12 [Free XP]]

I don't know much about this, i'm new in all of this, but why it's not possible fully compile map in CS2 without RTX, but possible in s&box?
I can't compile map with enabled option Generate Lightmaps, as well as bake all lighting in Preview Baked Lighting menu, it will say 'Must run with -gpuraytracing to bake preview lighting.' It's avaliable in s&box.
I know about -lightmapcpu argument to resourcecompiler, but i can't write it in Hammer 2.(it was possible in Hammer from Source 1, why this is not possible in Hammer 2?) Also it's doesn't support emissive materials

[WocklaN]

at this point i lost all faith in valve.