That solves a different problem. A remote desktop does the CPU-intensive computation on the remote side, not the local side. A tunnel like Wireguard or SSH doe

That solves a different problem. A remote desktop does the CPU-intensive computation on the remote side, not the local side. A tunnel like Wireguard or SSH does the computation on the local side, foz GUI programs that don't run in a terminal. Now, quite a lot can be done from a terminal, but some compute-intensive things are better suited to GUI programs. CAD/CAM, for example.