The first paragraph of the linked essay is as follows:

> It is unlikely that you will ever happen upon an editor who will argue that Wikipedia cannot claim that the Earth is not flat. But you may indeed encounter some...

From this, it is obvious that the essay is about people who claim Wikipedia can't claim the Earth is not flat, and how to respond to them.

It’s an essay with a title that is tongue-in-cheek. It’s throwing shade at flat earthers.

Rather ask if Wikipedia can claim that human activity is causing climate change:

https://en.wikipedia.org/wiki/Causes_of_climate_change