I'm skeptical, too . . . .
Dunno if this is a good gig for CFIs, which is the point of the post.
The comparison section is somewhat deceptive. FlightSafety isn't really an 18-month program. You can earn all of your ratings all the way through MEI in, perhaps, eight to ten months. Then, with about maybe 250-350 hours and maybe 60 of multi, you can strike out on your own, or, more wisely, work at FSI and build time. You can build up time to 1200 hours in the eight months remaining per the comparison.
I appreciate Boscenter's comment about hiring at 1200 with no CFI and no 135. However, Mesa hires its MAPD grads at 300 hours. Of course, a good difference is that MAPD students are monitored very closely during their training, so Mesa knows what's coming out of the pipeline. Moreover, these students are fully-immersed in Mesa's procedures during their ab initio training, which they paid for, and don't need a whole lot more initial training after they're hired.
Indeed, does the webmaster allow this sort of solicitation?