Who's that guy?
Considering the fact that Quinn just got a 5-year, $70 million contract at his age, based on those sacks, it's clear that those inside the NFL completely disagree with you.
The fact is that what gets defensive players paid are game-changing plays - sacks and turnovers. Sacks for linemen, INT's for defensive backs. Oversimplistic to some extent? Sure, but true nonetheless.
He's no option at RDE at all, unless you want both poor run play and zero sacks from your RDE position. They're better off going with literally anyone else on the roster. Dorance Armstrong, Joe Jackson, Jaylon Jelks, anybody. At least none of them are proven failures out there yet.