As someone who produces what could easily be labelled "adult" puppetry, I have to say that it's the content that matters as much as the form. Sure, there are swear words, lewd comments, adult situations and sometimes even actual sex scenes, but that's not the point; those things exist to help set a tone, and sometimes to set a stark contrast. I agree that the point shouldn't be that a puppet swears, because anybody can make a puppet swear.
To spin this another way, for those of you who seem to be disregarding puppetry with adult themes simply because they're present, should I disregard puppetry that appeals to younger kids simply because I'm no longer a child?
To spin this another way, for those of you who seem to be disregarding puppetry with adult themes simply because they're present, should I disregard puppetry that appeals to younger kids simply because I'm no longer a child?