I tend to agree only if after a bit of experience of building strength and muscle memory in your trad bow drawing muscles (which are different than compound bow muscle activity). But I agree that it certainly doesn’t take a big muscular body to efficiently shoot a heavier than average bow.
But it certainly takes more strength to have proper form drawing and shooting a 65+# trad bow than it does to draw and shoot a 47#er with proper form. Hence the reason so many guys shoot what is more comfortable and enjoyable.
The lack of strength in the upper body, shoulders, back, arms and fingers has everything to do with why most trad bow folks do not shoot a 65+ traditional bows.
What I find amusing is it seems lots of light weight trad shooters shot 65-70# compound bows in the past. But now that they don’t have the strength to draw a 65-70# trad bow, the 43.5@26 is “all you need and anyone drawing any heavier is trying to be macho”. Never do I hear….”This shoulder injury I got at work is killing me. But If I had the strength to draw a heavy trad bow I would for obvious reasons. After all that is exactly why I pulled a 72# High Country Supreme back in the day”