what is the bad stuff about luigi

Can someone point me to the transphobia / racist information? Or whatever else is being alluded to constantly here. When or where was it posted?

just as I post a comment to the mod thread referencing to such info to ask about it, the thread is locked.

Edit: so far the only thing is 1 retweet of a very obnoxious article praising Richard Dawkins. Surely there is more?