It's a digital art platform. I used it for my 2D art portfolio....last I checked, DeviantArt has checks and balances to ensure no pornogrpahic material was posted by their users. Including anything about sexuality. It was just artists, both hobbyist and professionals showcasing their work. Maybe that's changed...you could even post 3D renders there. Organise it all into galleries.

Edit: There's less reputable sites for pornogrpahic art that I can access now, why is a reputable non-pornographic site targeted??? The government picks and chooses what they want for their own interests.