Actually, NFL personnel men tend to shy away from those sorts. The demand on an NFL player is extreme, so they prefer players who do not have another good option. Medical students, and extremely smart and academically successful kids coming out have options. Coaches push their players so hard, that those with options, sometimes either flat out leave, or just emotionally check out and stop trying so hard. Also, the physical demands have an impact on their choice of careers after football, so if that career is highly lucrative, like medicine, then sometimes they just are not willing to push as hard and take as many physical risks. So, the coaches either don't push them as hard or push them equally as hard and risk losing them completely to a different career.
There was a Texas DL who came out maybe a decade ago, definite 1st round talent, he didn't get drafted until the middle rounds and was a complete bust. He had medical school as his backup option ... scared teams off. He didn't get the NFL money his talent warranted, he bailed in his rookie season. So, coaches are scared to push these guys, and they really dislike when the GM shoves them into their group. Coaches want to treat everyone equally. Smart guys with high ceilings and expectations present the hardest challenge, and one over which the coach has little to no control.
Wise or not, the NFL downgrades prospects for having "options." So when you see one living up to his potential and outplaying his draft position ... that's usually why.
