I wasn't familiar with this painting, for the very good reason that it doesn't exist: https://en.wikipedia.org/wiki/Temptation_of_Saint_Anthony_in...

I have a hunch the writer meant Bosch's version, given that his paintings are so visually dense that anyone would need a long time to take them in. An interesting essay, but I wonder how many other facts were negligently reworked by the author and how this shaped his critical opinions.