run old os on a new unsupported system

Given opencore allow old hardware to run new os, is it possible to do it vice versa, running old os on new hardwares? like if i want to run osx leopard on my M3 mbp

because from reading articles about similar topics, the answer has always been new macs doesn't have the hardware to run old systems, but doesn't that also apply to old macs as well? not having the hardware to run a new system?

anyone know if I can do it the opposite way with opencore?

Thanks