>>509913514most fine art back then was made for aristocrats, so its considered "classy"
your average person obviously couldn't afford paintings and the training to be an artist would mostly reserved for lesser noble families
we had ink printing but to a limited degree, and its unlikely they would distribute ink prints of nudity to the public
so yeah its probably pornographic. for rich pervs it would defiantly be a flex to have these things in your studies, and when outsiders see this stuff you just pretend its actually classy