You guys do know that ROTJ was made to be a child-friendly movie right? Heck, now it’s even a Disney movie. The EU is a completely different matter, sure, but the old one made it physically impossible, and the new one is owned by Disney.
Jabba took a very dignified political leader and princess, put her in a revealing costume and had her chained up to himself as a slave to humiliate her. I honestly don’t think it needs any more explanation than that.