The poem is as frivolous as our fear of spiders.
As a hypnotist, surprisingly the most frequent phobia was that of impending risky surgery. For example, face surgury could easily leave one side permanently droopy. Requiring physician approval my experience can not reflect the frequency of popular phobias such as https://www.abc.net.au/news/2015-05-01/ten-of-the-most-common-phobias/6439210