I strongly suspect art museums had sanitary plumbing long before it moved to the gallery area.

Grayson Perry has a far more insightful critique.

https://www.windsorflorida.com/app/uploads/2017/11/Grayson-P...

If you have £15,000 to spare you can buy a print and hang it on your wall.

Its the common conversation "I could have done that" "But you didn't do that"

Most things are easy to copy, coming up with the idea in the first place is the hard part.

I'm confused. Does this mean that the "real plumber" was an artist; or the art museum didn't have WC before putting a urinal art piece.

Yeah, I can see how that's confusing. My take is that the first person to display a urinal (as an art piece) was an artist - but the second person to _try_ to display a urinal (as an art piece) was just a plumber (meaning: not an artist).

Succinctly, it's the same as telling a joke a second time to the same audience.