This is surely a double standard by twitch. If they have decided to allow artistic nudity is same as pornography because those are going to be explicit pictures running in the mind of people including children. Nudity and gambling are suppose to be to the exclusive reserve of adults but with such nudity, children are going to be at risk.
To stream art works with naked bodies is only going to corrupt children more and the reason for banning gambling on their platform is more or less defeated.
Last time, I heard/saw someone which states that nudity is a kind of art. While this is my first time hearing the term "artistic nudity" here. I think this is where the nude models are being painted, or their body are being inked. Maybe this is the ones who were allowed, because the audience can't still see the full naked body of the models.To stream art works with naked bodies is only going to corrupt children more and the reason for banning gambling on their platform is more or less defeated.
However, in the eyes of others, especially to the gamblers and gambling streamers, who are once removed, and affected in the decision made by Twitch last time to gambling, they aren't happy with it. Twitch only gave them another weapon to attack them more. But as usual, Twitch can only ignore them.
Actually, if you look even deeper into the concept of Artistic nudity, you will realize it is not only applied to body paint or ink. It is more about nudity not having the explicit purpose to turn lustful feeling in the expectator, but rather being part of a representation of art. Some examples include artistic depictions of nudity in marble statues or paintings where a naked woman is featured, being one of the oldest representations the body of Aphrodite, the goddess of beauty and fertility.
So if Twitch rules stay the way they are so people are allowed to stream artistic nudity, in theory, there will be artist further encouraged to stream the creation of pornography and at the same time they won't be able to be banned because they could argue whatever they are going is an artistic representation.
It is truly a slap on the face against people who got banned from Twitch for minor things like swearing or doing content which was alledgely not Family friendly, all while this is going on.
for sure they will rack good money from this move, as people who are into this thing have now a very good reason as they can easily say, they are just doing this for art sake or they can claim it as their artistic way of things. such a very subjective approach. 
