The question ‘do corns have roots?” gets searched for in Google about 300 times a month. It could be assumed to be done by those who want to know why there ‘corns’ keep coming back and if the reason for that is that they have roots, like plant roots that they grow back from.
Corns on the feet do not have roots. If a corn is removed and it comes back, then that is simply because what caused it in the first place is still there. Unless the cause is removed, then it will come back.
The myth needs to go away and Podiatrists need to do a better job at educating the community about the myth.