Too soon to pass judgement on Schoonmaker. Schultz did nothing his rookie year too. Plus, Schoonmaker missed most of training camp so he has some catching up to do. I wasn't a fan of the pick but he needs more time to prove he is a bust. And he is not like Joseph and Williams. They have the physical tools just not the football smarts. Schoonmaker might be the opposite. Still he deserves a chance.
The fact that the Cowboys keep using 2nd round picks on risky player tells me it must be intentional. They are willing to bet the pick on a player at that point. They've been wrong a lot but I supposed if they find a 2nd round talent that shakes off his reputation and plays like a first round pick they think the risk is worth it. They have won 12 games for 2 consecutive seasons, and they are not bad this year, so maybe they are right.
But yeah, why bet a pick when you can trade it for an established player.