I could be wrong but I think part of the issue is that tastes in firearms are changing. I believe younger generations are more interested in ARs, pistol caliber carbines, and tactical-style bolt guns than hunting rifles. The market goes where the demand is.
My son is 22. He has an AR for govarmints.
Outside of that - a MKII in 243 (wood/blue) and a Bergara 30-06.
He lusts over traditional rifles.
The shelves aren't well stocked with them.
The younger people want/buy what's available and if all that's available is AR based - that's what gets sold which perpetuates the idea that onlyy those will sell. Self fulfilling prophecy.
Some - definitely but you tell me all these hipsters wearing vintage flannel, boots and hats all suggenly want ARs when it comes to guns? And yes, young people are buying guns...