Censorship is a constantly advancing tide and without pushback it will eventually come for the artists and art you like. The only way you can stop this is to stand against censorship, even of art you dislike or find distasteful.
There are only specific cases where art has to be curtailed and it has nothing to do with offense or discomfort. It has everything to do with if real people are being harmed. And even then, these aren't clear cut because what constitutes 'harm' is a scale.
This isn't even touching on the fact that censoring and changing the paid digital artbook is extremely scummy. Remember, people bought the art book for the guest art (removed) and concept art (censored). It highlights the problem with digital media and how companies can (and will) erase things in acts of revisionism at the cost of accuracy, the consumer and authenticity.
And then there's the fact that Skullgirls was crowdfunded. People funded the game based on expectations; expectations that are being violated. Stretch goals that were met and added to the game are now being removed. How is that appropriate?
The Skullgirls debacle is bad. It is bad from a censorship point of view. It is bad from a media history point of view. It is bad from a consumer point of view.
As an artist and someone concerned with good consumer practices, this is an abhorrent situation.
Nothing about it is good. Please, sit down and reconsider your position. Saying "censorship is good" should be an immediate red flag that you are not one of the good guys.