What is Hippopotomonstrosesquippedaliophobia?

I would just call it fear of long word ..

This word and phobias in general seems to point to the fact that as society ( advances ) forward many steps in reality it generates a couple of steps backwards in fears and phobias. Sometimes I wonder earlier humans may have been better off. eg. fast travel and communication over internet moving forward, Now there’s need for protection of hacking. just saying. !!!