Everybody has their own set of morals in life and some things may bother them, some things may not, and some things cross the line and are unforgiveable.
My favorite college bball team that I grew up with had a player that punched a female at a night club. I refused to watch them until he was gone. Thankfully, the head coach wanted him gone, but there was nothing he could do about it until the end of the season for legal issues. Once he was gone, I started to root for the team again.
That doesn't make it right, but it certainly doesn't make it wrong.
For me, if the Cowboys had cheated like the Patriots did, I would not be a fan of the Cowboys anymore. I know first hand how people's livelihoods are at hand in the NFL and while they get paid well, they put in more than enough work to justify that. And the Pats basically crapped all over that and cost people their livelihoods and hurt many careers.
If morals should not have mattered at all, then they should just go out and have games in prison on TV. I'm sure it would be entertaining to a certain level and the prisons could always use the money.
YR