The worse part is that they started with a plain wrong argument, this is not to attract the attention of billionaires, altough it can too. This is to catch the attention of everyone, to create a higher mass that is needed to change something, and tbh they are making more people aware of the issues, even if they get some stupid arguments against them when they are really doing no real harm as far as im aware.
Which artifact was damaged? Because even in your link the article says:
"The New York Times’ ran an article titled “Climate Activists Throw Mashed Potatoes on Monet Painting,” further describing it in the subtitle as “the latest attack on widely admired art.” However, it is not until the fifth paragraph that the article notes that “the food did not cause any damage to the piece.” This raises the question, does the public differentiate between “damaging pieces of art” and “pretending to damage pieces of art” in their views of these non-violent, disruptive protests?
Also comparing having to make people understand the degree of damage we get from climate change vs christianity, its just an amazing analogy lol, what can i even say after that?. Have a nice day, i think you really need it.