Yeah,
I think a lot of people viewed him as a good capper because he had a hot stretch in CFB there. He could definitely heat up, as we all can. But he would go ice cold as well, just as we all can. I think he went on a 5-23 run or something like that shortly before he got canned.
End of the day, he was just a pretty average picker. And like you said, I think his reactions to certain games created a perception that simply wasn't true. A lot of us can definitely humble-brag now and then (I definitely am guilty of this) and stay more quiet after a bad day/loss. But he did this serially.