For starters, he spoke at length at Huber's before the start of the year about the state of the basketball program. Went so far as saying there's nobody more "pissed" than himself for the state of the program.
"Rest assured, there is nobody more “pissed” about Indiana basketball than Archie Miller. Those are words came straight from Indiana’s head coach’s mouth. Every morning, Archie Miller gets a “talking” from the person in the mirror.
Clearly Archie Miller is not oblivious to what goes on around him and what the Twitter-verse is saying about the Hoosiers. While social media can be a major distraction, Archie Miller understands the importance of keeping tabs on what is going on. If you truly ignore all that takes place and avoid social media altogether, you are probably doing a disservice to yourself by not understanding your surroundings."
https://indianahq.com/archie-miller-updates-on-indiana-basketball-at-2019-huber-winery-event/
But it goes beyond that. He's openly talked about the lack of mental toughness this team has and has said it's reflection of him and that he along with the entire staff has to do a better job. He's taken accountability multiple times during interviews, press conferences, etc throughout the course of the season. And again, remember, he doesn't owe you sh*t.