Stuck in the past?
I don't know about their upper leadership, but the boots-on-the-ground Scout leaders are often way behind the times. It wouldn't surprise me to find out the top levels are stuck in the 50's as well.
I used to work at an outdoor chain (REI) in camping. Father/son combos came in all the time with "required gear" lists from their scoutmasters that totally ignored decades of improved gear design. Cotton and flannel clothing, external frame packs, pup tents, kitchen-sized pots and pans. As often as possible we would steer them to better, lighter gear and tech fabrics (for a good price, no sales commission involved). We used that old junk when I was a Scout, I know what it's like.
I believe our too-urban populations need something like Scouting, but it seems like the BSA are mired in the past. Just one man's opinion based on limited data...