That is only partially true, as it assumes Frank failed NCAA administered testing and not school administered testing. From your own resource:
What is the penalty for failing a school-administered drug test?
Each NCAA member school is responsible for determining whether to establish an institutional drug-testing program, at which time the school would be responsible for determining applicable penalties. If a testing program is established, though, the school is obligated to enforce the penalties. Failure to do so can lead to NCAA sanctions.
I would guess we don't know the what the current school policy is at this point, obviously we have some idea what it was back in the era when we failed to observe it leading in part to our sanctions.