If it wasn't an issue in the teams eyes why does the NFL have to force teams to participate? The only two teams that seem excited to do it are largely disfunctional (Jets and Bengals, although not as much lately). Do you see the Steelers, Patriots, 49'ers etc doing this? No. There is a reason.
I also think Sam is being a little selfish here. He's the first known gay man drafted. Now what are teams going to think when the second comes along? Oh great, here comes the circus. And for everyone saying he has a short time to make money; do you honestly think he will have a hard time finding a job in the media after football? Hes guarenteed a job for life after this.