Maybe the most frightening thing is that this person apparently went through medical training and never learned rudimentary field biology. Tour guides in wild areas all over the world have a "this is not Disney World" or equivalent mantra. Life is not like television, unless it is the right television. As a child I watched https://en.wikipedia.org/wiki/Wind_Across_the_Everglades where the Burl Ives character kills a man by tieing him to a manchineel tree and will forever remember him wickedly proclaiming "The manchineel tree, the only tree that can carve its initials in you".