The complaint isn't about the cameos.
Although a new complaint has arisen about the idea that the cameos HAD to be there.

If he was cut out, do you think ANYONE would be asking, "Wait, why was a key member of the Rebel Alliance there? How'd she get there?!" It's a nice addition for fans but the idea that it was a must for the story is just wrong. Most people watching the movie won't get the reference and will still get the final scene.