Ok, this is kind of offensive:
If you like to go off-road, explore, and camp in a different area each night along your journey and be self-sufficient, but pull an off-road camper, or you're doing it in an off-road RV, then you're an overglamper and probably losing touch. LOL
Glamping is a thing. What you describe is not glamping, not even remotely. Not all of us have the luxury of setting up a dedicated overlander (or rocklander if you prefer). For many of us a camper or camping trailer is a much better way to go.
For starters, my part of the country isn't conducive to overlanding. To go far enough for overlanding to make sense, I'd have to drive further than I normally have time to get away from work. I also don't have the luxury of calling my boss and saying that I'm going to be gone a few extra days because my truck broke on a trail.
If I built an overlander and set it up properly, I wouldn't be able to drive it 90% of the time. The place I work has checkpoints for entry and exit and liable to be subject to a vehicle search at any time, it's part of what you agree to working here. If they decided to search your vehicle, and having it loaded with equipment would make that a higher probability, they remove
everything from the vehicle for a thorough search and then you have to repack when finished. Guess who's going to end up hours late for work that day. I've got no use for a rig that I can't drive to work at any time.
"Pack when you get ready to go." That doesn't really work out either. If I've got to spend the week packing the truck to get away for the weekend, I'm probably not going. If I can hook up to a camper or camping trailer the day before and hit the road, I'm much more likely to go. If I don't have to spend a lot of time unpacking or repacking, and setting up or breaking camp at each stop, I'm much more likely to go cross country hitting multiple stops. Not going to happen if I have to setup, breakdown, and pack a tent and other equipment at each stop.
Pulling a camper or camping trailer does not make one a glamper or mean that they are losing touch, that may simply be the most practical method for them to get out and go. That said, if you want to set aside a group for those half million plus "luxury overlanding" RVs and call them glampers, I'm all for it.