Yeah, I can't avoid adding to their bottom lines by watching.
Honestly, giving up the gear is pretty easy. I think most officially licensed team gear looks terrible. I can't remember the last time I purchased anything Orioles/Skins related and I'm completely fine with it.
I don't mind going to Camden Yards once a year to catch a game because no matter how crappy the team is, it's still Camden Yards. But Fed Ex just has no redeeming qualities at all. Add that to Dan Snyder being the worst owner in sports, there's no reason to go.