2020 is ambiguous - there's both Intel and M1 MBP from that year. I can tell you that M2 can't handle TP-link meshes.

Nope, mine is an M1 MBA, and the mesh I have is a TP Link. Both 2.4GHz and 5GHz bands are meshed with OneMesh.

Are you running the latest firmware on the TP-Links? I remember their meshes being wonky regardless of the connecting client in the early days.