My point was that it is hardly "impossible" to replace a WR. Divas are dumped league wide all the time. AJ Green has more than capably filled the hole. There are plenty of WRs in NCAA that can play -- some that I think have much better ball skills than Stevie Johnson, quite frankly.
Now, I'm not saying that all things being equal, the Bills should be creating yet another hole, but Johnson has shown he's an idiot and doesn't understand how to follow directions. When trying to turn around the worst franchise in the NFL, one can't rely on the unreliable to lead the way.