IMO, archery and bowhunting began another skin shedding change as early as the late 40's.
What I noticed in the Nor'East was a changeover from self and backed longbows to composite wood/glass recurves.
Bounty and innovation abounded in the US and recurve development was in full swing. The efficiency and flat out speed of these kinda engines just made sense to paper punchers and hunters alike.
My Dad was an archer and bowhunter, and he turned me onto Howard Hill, and the longbow, in '55. My archery bible was LE Stemmler's 1953 edition of his "
The Essentials of Archery " (go on, click on the link and enjoy!) - real heady stuff for a young lad of ten, and full of the kinda bows I'd seen Flynn and company touting in "Robin Hood" - and the bowhunting tackle and info was read and reread 'till the print nearly melted off the pages. We had longbows and cedar arras. There was never talk about bow sights since we were rovers and hunters, not target archers.
I believe that the increased public interest in target archery, from a non-hunting standpoint, and the use of sights, trickled over to bowhunting. Hey, it was a post-war decade of "innovation" and "space age development", and Madison Avenue marketing hype was blossoming. The more radical the idea the more it seemed to garner interest and even popularity - and this doesn't mean that the "new idea" was ultimately the best, or even better.
You stick a hatpin into yer hunting stickbow's riser and use it as a sight of sorts and call that "traditional", I've got no problem with that at all. You stick on a Chek-It sight with a bubble crosshair 2x scope with windage and elevation gears and I'll argue that ain't traditional bowhunting.
Same could be said about longbow design - there are those (namely, the characters that run the IFAA) who'll tell ya that a modern hybrid longbow is NOT a longbow, that only straight limbed or "D" braced longbows ARE longbows. I've got my opinions 'bout that, too.
So, "traditional" is at best an ambiguous word that ultimately you will define yerself. Whether or not others will agree with you is something to either ponder or dismiss.
I instinctively shoot a take down 3pc hybrid longbow and carbon arras. I am a traditional bowhunter. YMMV.