This is a forum hosted by venture capitalist investors and frequented primarily by IT professionals ("hackers"), unwittingly opening some NSFW material probably won't fly well in that kind of environment.
The National Gallery (of the UK) has this page one click from the homepage, "Our most famous paintings"
Whether the standards of workplaces should allow artistic nudity is completely beside the point. Neither you, nor I, nor Dalewyn control such things. All we can do is work around them.
No. You could quit and be free.
Though some might argue it's also Not Safe For Wife too, YMMV.
Normal people, not so much.