I think there may be some general confusion between 'ray tracing' and 'raycasting'.

Thanks to Nvidia, 'raytracing' now means 'doing an utterly absurd amount of raytraces all the time in order to have slightly more accurate relfections and light physics'.

Whereas, at least the lingo I'm familiar with, 'raycasting' is just like... a single ray, maybe a couple to form a frustrum, or maybe one that follows some bouncing vector math rules, to do a fast simulation of a bullet trajectory, or maybe its just attached to the player to tell the rest of them game something like... the player is on the floor, the player is standing infront of a wall or a short stairstep or climable ledge, etc.