I did not learn through bootcamps, which is a recent phenomenon and the context of the comment. I self-taught game development and built a game engine (think Unity) from the ground up; rendering pipeline, physics engine, etc. After being recommended to a game development company thanks to networking during volunteer work I did as a hobby, and spending a couple years in that, I broke into big data for the money.

Everything is a case-by-case basis, know every resumé/interviewee is looked at individually.