The swastika symbol apparently used to mean "good fortune" or "well being", according to wikipedia. So does it matter if he uses a meaning other than the one a random person might interpret it as? Not sure. I lean on, it's Sony's decision ultimately. What if he had like 500 reports on him for his name being offensive. Sony should just ignore that? Again, not sure.
This example isn't actually that great, as the Nazi swastika is VERY particular. The orientation of the points is reversed in comparison to most uses of it in other cultures. Hitler was also very particular about its size, thickness, and that it be paired with the white circle against a red field. Beyond that, I think this comment is rather ignorant of the evils of anonymous internet trolls. Nasty people love to band together to write mass reports "for the lulz" these days.