Spike Lee has said a lot of things -- I'm not going to defend anything he says, let alone his entire spoken oeuvre, especially since Spike's words seems like a tangentially focused part of this argument.
Now, if you have the owner of an NBA team being put forcibly on the record saying that he doesn't want his biracial mistress to bring black guys to the games for all the world to see -- especially the fans of the NBA who (go figure) tend not to feature many Sterling-esque viewpoints in our ranks, it brings loads of bad vibes on the league and onto the sport we all enjoy. Significantly more than Spike Lee saying, well, anything. Because Sterling's an owner of one of the most marketable teams in the NBA.
Think about how sick we are of the KIA ads. And the State Farm ads. The Clippers are everywhere. When's the last time you saw a Spike Lee joint?