I don’t have statistics for you.
I’ve never had a good experience personally, as a developer, with someone whose applicable education came only from a boot camp.
Boot camps are fine for supplemental education. For learning a new skill. But are not (usually) a good foundation, and don’t teach you enough to actually get a job.
Also, and this is more personal, it’s kind of annoying when someone thinks their 60 hour class should get them a high paying job.