Yes, obviously Rated applicants will only be considered for Rated positions, but we're not saying the same thing. You said:
This simply isn't true. An OTS Rated applicant can list only one AFSC that they wish to be considered for (and be considered for that only), list and rank all four, or any combination of specialties in between. If an applicant is dead set on being an ABM for example (or any of the other three), they can list only ABM and only be considered for that position. Likewise, if an applicant just wants to become a Rated Officer, they can list all four in whatever order they prefer and then be considered for all four positions. There is no requirement that Rated applicants rank and list all four AFSC's.