True - a full scale EDGE has a huge rounded leading edge on the wings
Many of the old "textbook" guys don't even know about this shape - it snaps quickly recovers quickly - also spins well recovers on point etc..
After doing more airfoil shapes than I can count - (aerobatic types) I came up with a shape which resolved the issues for me
"make it as thin as you can but still rigid and strong ."
OR make it thinner yet and brace it - either setup works as long as the wing loading is within reasonable limits
For really forgiving but maneuverable flying - a low aspect ratio very thick wing is also good - it is pitch insensitive
The new little VisionAire by Horizon is a prime exampleof this approach.