I only like to buy print magazines now for travel, it is nice to have one in the airport, I mostly rely on digital books and magazines. Maybe not ideal but it is normal for me when traveling to read a book on my phone. I will also have some magazines loaded to look at as well. But on my last trip I purchased a road and track at the airport. It was the only car mag on the rack that was looking interesting enough to purchase. Made be consider Re subscribing to R&T in print.
Now as to Backpacker and all print magazines for that matter. I was on a trainer trip for our Boy Scout troop on the weekend and among the adults were discussing backpacker magazine and reading material. The Scout Master present is a long time subscriber and only interested in a print version. That is kind of his stick something in the backpack reading material. There are people out there that have no interest in digital media but apparently not enough to support print media. I have purchase backpacker occasionally myself, but have not been of a mind to subscribe. They really are no worse than many of the gear reviewers on youtube that are pretty much running commercials. One that comes to mind is Dan Becker who seems to be moving more toward add driven and turning the videos into a business. On the other hand you have Darwin who killed his channel as he did not want to be in the gear review business. But being in the gear review business on you tube is no different than doing the same thing in print. It is just that these are individuals bypassing print media and starting their own media companies. The world is becoming a lot more competitive for our attention.
Not many years ago the primary way to get our attention in the special interest world was a magazine, that world is coming to an end, I hike, I build plastic models, I was a cyclist, and I am a car enthusiast. I was known to buy magazines related to each of these interests, Backpacker, Bicycling, Fine Scale Modeler, Road and Track among them. Now I buy none of them. Some are gone, some are going, but I only buy a print magazine on special occasions now. All of these things I can get in media other than a magazine and get as a whole better content. I have a fairly large digital library of Tamiya Model Magazine back issues, that is my staple when I need a magazine download for a trip, a swim meet or otherwise have a pending day or few hours of boredom coming.