Feel free to set me straight, Sciolistes
There is an overlap between piston GA and jet ops, but it is quite small. I'd say that a piston aircraft going into some VFR airport in Switzerland would face the same issues as a bizjet going there. Both cancel IFR some way out. An IFR example might be the piston aircraft going IFR into such an airport (e.g. Lugano LSZL) which again will be similar to the bizjet case (no big-jet airline will be going there; 6.65 degree ILS).
But one cannot compare the general need for SA between a VFR/IFR-OCAS piston operation, and an airliner. The latter flies in CAS (or is under a radar advisory service for those that do bits in Class G) whereas the former has to look after himself, and his biggest challenge is not busting CAS.
I don't suppose I disagree with you all that much but I do think that making very general statements is not educating GA pilots very much.