Dbu,
Sorry, but I respectfully disagree with you. The stuff I do and teach is about wilderness survival. It's a set of skills designed to keep yourself alive in the wilderness, whether you're lost, delayed or whatever.
Is the stuff I teach useful in the middle of a godorsaken combat zone? No. But it's still survival, and not only bushcraft... Bushcraft is a part of it, though.
I've seen a "wood guy" who could light a fire with a single match every time and sharpen a knife beyond shaving sharp, get lost and start bending the map, forget drinking (and stop thinking) and start rushing and trashing around to find the exit... He was good at bushcraft, but he didn't know how to survive in the woods outside of his usual framing... I had a hard time bringing him back to the real world and just have him calm down, drink a little water and think again...
Now, could we say that wilderness survival is just a specific part of survival in general? IMO: yes.
Cheers,
David