All of those guys were considered to be generational prospects in college. Wentz was a mid round pick until he rocketed up the draft boards due to how thin the QB class was thought to be.
First, that wasn't the question. Here's the question:
Has there ever been a rookie that's played as poorly as Wentz and still have troves of people relentlessly kiss his butt? I've never seen anything like this.
Fans of Aikman, Elway, Cam, etc. "kissed their butt" even though they had terrible first years. Why? Because they saw the talent those players possessed and were willing to give them the benefit of the doubt and not judge them based on their rookie season.
Similarly, Wentz is having a pretty bad rookie year - though he did start the season hot. Many who evaluated the Eagles thought they would be at the bottom of the division because of a new coach - Pederson - and because they were implementing a new system. Those who aren't blinded by the glare of Cowboy glory and their hatred for everything Eagles can see that Wentz is a good prospect, has the tools and doesn't have the supporting cast Dak does. This isn't a Dak vs. Wentz argument to me, which is why I can praise Dak
AND see the talent Wentz possesses as a franchise quarterback.
Third, to address your "generational" comment, what does that mean? If it means once in a generation talent, only Elway meets that qualification. I would say Manning, but Manning's talent was average at best. He excelled by understanding the game better than most quarterbacks - immense football IQ. I would say Cam, but I don't think Cam has it in the maturity and football IQ categories, and for all the running he does, a quarterback isn't a generational talent because he can run but because he can pass more. Otherwise, Michael Vick could also be called a generational talent, and he was a better runner than Cam.
But I'll await your definition of "generational".
Fourth, do you know why Wentz was considered a "mid round" pick? Notice the list of quarterbacks I mentioned above? What is common about them and not Wentz? I won't make you guess.
Elway - Stanford
Aikman - UCLA
P. Manning - Tennessee
Luck - Stanford
Cam - Auburn
Winston - Florida State
Wentz - North Dakota State
The reason Wentz wasn't initially considered higher is because he went to a non-Power 5 school, and the question wasn't did he have the tools but did he play the best competition. But, rest assured, teams and scouts noticed him.
If you're good, the NFL will find you. And if I recall correctly, I heard a few commentators say that if Wentz had gone to a Power 5 school, he would have been the No. 1 pick hands down.