> If I open too many tabs in Chrome I can feel the bottom of the laptop getting hot, open a YouTube video and the fans will often spin up.
Change TDP, TDC, etc. and fan curves if you don't like the thermal behavior. Your Ryzen has low enough power draw that you could even just cool it passively. It has a lower power draw ceiling than your M1 Pro while exceeding it in raw performance.
Also comparing chips based on transistor density is mostly pointless if you don't also mention die size (or cost).
The only cost that matters is the cost of the final consumer product, it's AMD or Lenovo's fault that they can't afford to eat the cost of a bigger die for a better consumer experience