You could definitely go eGPU + intel NUC and tape them together for 2x Switch + Dock. M2 nvme drives are tiny and I think some boards take laptop memory. You really only need the equivalent of a gtx 970 to do 1080p which probably exists in Pci x4.
But I don't think there's need to argue this further, I think the point that there isn't a one-size-fits-all solution has been made exhaustively, by everyone.