In theory sure, but you said UE5 was "built from the ground up to incorporate RT-hardware" when there's literally no evidence of that whatsoever. Epic flat out said it was built to support non-RT systems and haven't mentioned RT support for UE5 at all. This makes a lot of sense when it's becoming clearer that all of the new console's RT hardware isn't going to stack up to the RTX3000 line.
An engine with a feature set built entirely around RT will somehow not support any RT. What am I even reading...