I've been thinking about the term for a lot of years, I've listened to the arguments, read the arguments and all that and for me Bushcraft has never changed from just getting out there, it absolutely covers modern technology and materials and it also covers old time knowledge materials and skills. I've built shelters with Mors that he's developed and sung the praises of modern materials, he's of the opinion that we should all be pressing forward in pushing the boundaries of materials and technology as well as developing the classic skills.
We have the luxury of practicing our bushcraft however we're comfortable doing so, that allows us to forage while wearing the most up to date technical jacket available or a grass skirt, we can carry a cuben fibre tarp to sleep under because it means we can get out there and enjoy ourselves or we can use a canvas tarp (I love canvas tarps), ultimately we're still sleeping outside under a tarp, we're still foraging for food, we're still lighting fires, we're still pushing ourselves into the outdoors and having adventures and that's what it is for most of us.
Learning to survive without any kit is a skill and we might limit our kit to increase our skill, but I'd want some good kit if I really had to survive, modern materials would be a yes please, but if they weren't available, I've got some skills that can help me out as well so hopefully I'll be all good....
Just my 2p