I'm wondering at this point whether it's TSMC supply constraints. Intel still wins in sheer number of fabs producing their product. If you can't actually get enough AMD chips to ship your laptop...
AMD CPUs weren't really compelling for high end in mobile until the Zen2 Ryzen 4000 APUs released last year. There weren't a lot of high end models to update to put that in, so it took a while to get those chips into nicer models.
TSMC supply limitation and pandemic induced demand for computing devices doesn't help.