There are hundreds of factors why a kid picks a school. Hundreds of factors when he doesn't. And every school misses on its targets from time to time. Absent specific information about the recruitment, blaming coaches (especially one who just got here a couple months ago) for not landing one recruit seems emotional and divorced from reality.
On the flip side, calling a miss anything but a miss is cope. Guessing it must be money or some strategic resource allocation is cope. When there are continued losses for top targets, that indicates a problem. And when there is no viable plan B (I think we have one here with Keys), that problem can become catastrophic.
Too soon to know how this all plays out, but based on MJC's ceiling as a player, the number of visits and resources invested in his recruitment, and general consensus about the recruitment up to about 36 hours ago, him signing elsewhere would be a major miss.