We like to use the principle of charitable interpretation on here, and to be charitable, I think it's really clear he was saying that everybody should expect to be wrong sometimes, has been wrong, and should be scrutinized thoroughly.

To label someone as an unreliable actor is different than using our own free will and minds to analyze actions and determine truth.

Competent people use processes, procedures, and safeguards to minimize human error. It's easy to say "everyone makes mistakes" when you're just a guy, but when you're wielding the powers of the presidency in such an unbalanced and unchecked way, he should be reassuring us how he will assure the trustworthiness of his proclamations going forward. Instead, he gestures vaguely to the human condition.

How can you say he's not an unreliable actor? The man has unlimited resources, power, and the best information available to him. He also is in a position of dizzying public trust right now, so really he should be making the utmost effort to be above reproach. "Aw shucks man, what do you expect, I'm just human after all" is not reassuring. And I'm sorry that's not a charitable enough take, but we are far past the time for benefit of the doubt.