I am not sure why you seem to be implying that Michael Sam has said the media is what is costing him a chance to play in the NFL. At the same, to say his draft status was NOT impacted dramatically, is naive, IMO.
I watched this kid very closely every day in training camp, and as another poster pointed out, because of the multiple injuries early in camp, Sam got the lion's share of reps at LDE. He took virtually every 2nd AND 3rd unit rep waiting for Wm. Hayes to get healthy. It was pretty apparent to me, that by the 3rd week of camp, he had hit the proverbial wall. Camp legs is a very real thing, and just about the time he was feeling it, Westbrooks found his way back after missing much of the first 2 weeks.
At no time did I ever notice, that Michael Sam was in over his head lining up against NFL players. He excelled early on, then eventually wore down.
I would have enjoyed seeing how he would have fit in after C. Long went down midway thru Week 1. As established at Hayes is, he is not an every down LDE. And he wasn't no where close to being 100% when the season started. If, they would have found a way to keep M. Sam around, I suspect he would have given them than pass rush that was sorely missing the first month of the season. Obviously, we will never know. But its hard to say as a pure pass rush specialist, he lacks the skills to contribute.
Also, as someone else also mentioned, to assume that is all he will ever be is a miscalculation of his ability, IMO. For the first 2+ seasons, Robert Quinn was the poster boy for a "one trick pony", and has since become a very effective every down player. Similar expectations, albeit not at the same high level, are reasonable for someone like a Michael Sam.