I have a different perspective on point 5. One of the things that attracted me to Flatiron School was their audited jobs placement report. Very detailed statistics about how many students graduate, how long it takes them to find jobs, and how much they earn. I've never seen traditional colleges hold themselves to that standard of disclosure.
I think there are a couple reasons bootcamps are especially successful compared to colleges. At the top of the list is that most bootcamp students already have one or more college degrees. This is "in addition to," not "instead of." Secondly, because the schools are non-accredited, nobody does them just to please their family or because they don't know what else to do with their life. I'm sure there are anecdotal exceptions, but students are generally there because they want to be.