I feel terrible for that actor who lost their job.Those of us who regularly used that symbol as a joke before some people started affiliating it with "white pride" know what it really means, and it is so unfortunate how DRASTICALLY misunderstood that symbol has become. I've done a lot of readings on how this symbol came to be affiliated with what it is now affiliated with, and it is an unfortunate circumstance.
Those of us who have used it for years upon years use it daily as a dumbass reference for "butthole", where you hold it down below your waist and get people to look at it. It is a game between friends that bled into media when it became large, and media misinterpreted the "conservative youth" playing this game with their friends via newspaper images, social media posts, and news interviews as a way of spreading hate and white pride.
One can say this is an inappropriate game to be playing in the context of a Universal actor in a character photo, and for that I am inclined to agree. It is most inappropriate to hold up an analogy for "butthole" in a children's character photo. It is just unfortunate how this individual will now be labelled (and Universal Studios) as not opposing hate.