Wait a second, folks who graduate from those schools get hired as CFI's at the school and these 22y/o's don't have 200 dual given. What they have is a degree (which is required to be a CFI at a university) and the blessing of having gone through the program.
I've done quite a bit of research on university CFI positions and the thing of it is that as far as the public universities go, most are required to publish the openings nationally (of course we all know that may not yield any noticeable outside hiring but at least you're able to apply for them). Engine-out is probably right in so far as the competition is concerned, it probably does take someone with 200 dual to bite into the system whe you are an outsider, but looking at their internal hiring you will quickly recognize that is blatant inconsistency in hiring standards.
The problem is that your intentions with the job matter as well. For most-time builders the job offers a salary, which is great considering 8 out of 10 of your friends are getting hourly, and a setting that predicates good equipment. So there have been people who jump ship, get burned a little and then come back and realize they can't get their old job back and they hurt, knowing that the FBO down the street won't get them the setting they were accustomed to.
If you're into aviation education ( such as yours truly), the job is predicated on not just your CFI credentials but your formal education as well, and no we're not talking about a degree in AS.
So my point is that it depends on what you want to do. If you're a time-builder then Engine-Out is probably right about the university track; it's an above average CFI gig and the line is long for those who didn't graduate in-house, if you're not a time-builder you might be able to pitch a different angle but that's a whole other post.
Starting out part-time somewhere and build dual given would not be negative in your quest for a university CFI gig, althought I personally find it sad that the contentions have gotten so entrenched, one now needs to go through "ladders of employment" WITHIN what is already considered the bottom rung of aviation jobs, talk about hamster-wheel dynamics.
Good luck man