Just hard to make the distinction...if the Bills were playing the Pats and Brady was at QB...and was getting hit repeatedly by Stroud and Poz and the rest of the guys on D. That's obviously going to cause some pain and suffering. If Brady's arm was injured, but he was still playing, would you feel bad for every INT he threw? I would doubt it. So it's really hard to agree on what the acceptable level of suffering is in a violent and competitive game like football.
If I was happy because my supervisor fell in front of a bus on the way to work and I was able to advance my career as a result...yeah...that's pretty vile. But in a profession where the intent is to hit people and hit them hard?? Yeah, you obviously don't want people to be damaged for life and endure a certain degree of suffering. The overwhelming percentage of fans, even Bills fans, would not cheer if Brady left the field on a cart in Orchard Park. But I don't think one should have to feel guilty for appreciating the fortuitous nature of another team (which has had a remarkable string of success and been the beneficiary of others' injuries) losing it's star player.
Especially if the team is...well...a bunch of a-holes.
We have had, and will continue to have, devastating injuries on our team as well, regardless of whether we are mindful of karma or not. It's part of the game...