I'm barely 30, but I've been hearing this since at least the early 2000's. No chance.
In terms of hockey's popularity, as a Canadian who has lived in many U.S states for work, school, etc it's non existent compared to Canada aside from Minnesota. Cost wise, it's also just as expensive if not more in the U.S.
Heck personally, L.A has had the Kings since what - the 60's? And there's still no dedicated hockey store here or go to rink. Everything's far (which is generally a socal issue itself), but the closet main hockey store to me with stock is Pure Hockey and that's 50 miles away and they only carry premium gear. In Canada, you can go anywhere find an assortment of hockey stores with gear for many price ranges. It just isn't comparable, which is saying something when you consider the population difference of each nation