Very few. That's a fair point. We've become much more mobile thanks to more cars, ever-improving roads, and the expectation you'll have to travel to get to your spot. Same holds for fishing, actually. Though if we were to go back and look at outdoor writers like Burton Spiller, from the golden age of outdoor writing, we'd find that pattern already existed: lots of people who don't live on the land they hunt or fish. Lots of people much like me: don't live on the land they hunt but hunt the same areas year after year and know them pretty well.
This kind of thing has come in waves. In the late 19th century there was a wave of urban hunters, and of eastern hunters hitting the west while the hitting was good. That was the Roosevelt era of the well-heeled sportsman and there was plenty of marketing aimed at separating neophytes from their money.
That's a common trend in magazines in general these days. Blame Maxim for setting the bar low, if you like. Long-form articles have all but disappeared. The contrast between the old ca. 1982 Field & Streams I have kicking around and the new, post-Maxim incarnation is depressing. Everything today is an infogram or a listicle. But that's been underway in outdoor magazines for years, actually ... go back before Maxim and you'll find that outdoor mags had abandoned stories, which used to be their bread and butter, in favour of "news you can use." People claim to miss those stories, but newsstand sales tell another tale.
Not unique to hunting, again. I've found the same with music, photography, and just about any other gear-intensive activity. People try to buy proficiency: gadgets instead of guitar practice, photo gear instead of shooting photos. Same reason people fall for new hunting gew-gaws. It's a marketing machine that offers success through shopping. If there's a social trend there, it's way bigger than the hunting market.
One thing that's certainly changed is the number of people who want to make money off their hobby of hunting or fishing. Lots of people coming up with and marketing gadgets, or trying to be guides. I used to joke that there was only one dollar in the entire fly-fishing market, and it just kept circling and changing hands. I think to a lesser extent we see that in hunting, too.