Well, I forgot Cam, Matt Ryan, Eli, and Dak. I would've thrown Palmer on there last year, but I'm concerned this year is it for him.
So that'd be 12 maybe 13.
The QB's who are 33 or older would be Brady, Rodgers, Ben, Brees, Rivers, Manning, Smith.
In the last 4 years those teams have drafted:
3rd rounder Brissett, 2nd rounder Garrapolo, 5th rounder Hundley, 4th rounder Dobbs, 3rd rounder Grayson, 3rd rounder Webb, 5th rounder Murray, 5th rounder Hogan,1st rounder (trade up) Mahomes.
Notable QB's outside of the last 4 years drafted by the above teams:
Mallet, Sorensen, Jones, Nassib.
So when you ask me if I think its realistic these teams are preparing to replace the "old guard" of QB's, I think the answer is undoubtedly "yes."
Your last 5 posts have been utterly devoid of any thoughts other than something you'd see scribbled on a bathroom stall.