In addition to giving him a surfeit of unearned and undeserved self esteem, it has had a side effect. It has fostered a delusional idea, convincing him that he can similarly wipe out and rewrite the public record of his tenure.
The problem is that the evasions, failures, lies, and pratfalls have been witnessed by the public in real time. The reality is out in the open. Neither it nor the experience that it has inflicted on the nation can be erased by the smooth and soothing words of the golden-voiced thespian.