It was an ignorant tweet. If he actively scheduled 3-5 games against teams like Yale, McNeese St, any of the top half teams in the MVC, etc. nobody would be commenting on the lack of a P5 game on their schedule. If anyone did risk assessment it was Miami. Actively avoiding quality mid-majors, but expecting a mid-tier (not a Purdue, Alabama, UM, Duke, etc.) to agree to play you.
Edit: I will give him Wright State as a quality mid-major. He needed another 2-4 (excluding SunBelt challenge)