You are right, he did break out the receipts, but then he unnecessarily attacked the fan and said the fan was 'part of your problem.' You are the head coach making over $11M a year, part of the responsibility that comes with that is being above the fray. Just say that your track record speaks for itself, you are going through a bumpy path, but that you will right the ship and 'next question'.
On the flipside, when you are 5-5 in your last 10 ACC games and refuse to use tools available to you like the portal, I think it is fair that fans are getting restless.