I saw this as well as someone who hired from "Bootcamps" graduates for a couple of years. The people that got into bootcamps came from all sorts of professions. Most of them had a Bachellor degree (this is in Mexico) and had already worked in their profession for some time.

There were people from Tourism, Law, (non-software) Engineering, Biologists, Chemists, Philosophy, among others.

Most of the people in those areas were burned out of REALLY being overworked, underpaid and being treated like trash (you should see how Law firms treat their interns).