> Is tech/computer science the only STEM field that had boot camps? medicine, nursing, electrical engineering, civil engineering, physics, biology, environmental science, etc.

In the US, careers in those fields requires certification and IT does not. Probably because 1) the field exploded in popularity before anyone could formalize a certification process and 2) bad developers aren’t as dangerous to society as bad surgeons, bad nuclear physicists, bad civil engineers, etc.

Also IT’s labor gap is especially extreme. I think it takes less knowledge/training to be helpful to a company when they desperately need workers with computer skills.