Such bad logic.
"Oh, if it were bad, then it wouldn't exist, right? Must be fine!"
This kind of garbage mentality is what inhibits positive change in the world.
It's good that you understand the Washington Spics would be offensive, but if you can't draw the parallel from that to Redskins you are missing the point.
It wouldn't be appropriate to name a team the Washington Black Guys, the Washington African Americans, the Washington Colored People, or the Washington N*gg*rs. Even if you want to argue that Redskins isn't offensive (which is absurd do you think Asians want to be referred to collectively as Yellowskins?), it's still not appropriate for a team name.
What happens in these type of threads is that people who are mildly bigoted try to come up with some twisted logic that allows them to support social injustice without having to admit or confront the reality of their world views.
Sometimes it is mind blowing that people can look at an image like the one below and not see any sort of issue.
Chief Wahoo just wants to support his team, what's the big deal right?