My point wasn't that the kids are guaranteed to improve, it is that counting on production from one of three potential second-year-leapers is a whole lot more likely than getting anything from a rookie.
True, there weren't a lot of alternatives, but the kid absolutely improved as the season went on and, IMO, was more useful than you give him credit for. I thought he played like a complete pussy in the preseason and was ready to write him off, but he was dramatically better in the regular season, even as early as the first Jet game. He was getting open in space and was pretty much a normal rookie fighting for a contested ball; not good, but not cover-your-eyes awful (like he was in the preseason).
Even if the injury sets him back, he'll still be an asset by virtue of the improvement he already made over the course of the season.
And even if that fails, there is still Boyce and Thompkins who could improve. Assuming none of them developed this year strikes me as more unrealistic than thinking one will.
I had the exact same feeling about Taylor Price.
Great point. And much more concise than my long-winded offering.