Intel's foundries are still a huge advantage. AMD still can't produce as many CPUs as Intel can. So, while AMD does get a bit of a process advantage, they don't benefit from a volume advantage.
AMD CPU Market Share Soars Across Desktop, Laptop, and Server Segments in Q1 2022: Approaches 30% Mark | Hardware Times
Close to 30% being ~27.7%. So Intel is still moving ~2.6x more CPUs than AMD can move.
So, yeah. The process advantage at TSMC is allowing AMD CPUs to be competitive and they are in demand, but they are still far behind Intel WRT CPU sales and that's purely down to Intel owning their own foundries.
Regards,
SB