I see this brought up quite a bit, and I don't really see the issue. They are offering their graduates jobs, so why should these jobs not count just like any other jobs?
In other words it looks like a pyramid scheme if the grads only get jobs as teachers.
"Congrats on getting into the program, you're now adjunct faculty, the class you're teaching starts at 930am Monday."
5 years later maybe they have a piece of paper and maybe that impacts their job prospects.
From what I understand, teaching is generally seen as a positive signal (if the boot camp is a good one), because it means they know the material well enough to teach it.
I can totally imagine the opposite becoming true (teaching is a negative signal), creating a positive feedback loop in the opposite direction, and turning the boot camp into a pyramid scheme.
I guess it all depends on the credibility of the boot camp, kind of analogous to universities, as a sibling commenter points out.