At one level, Mueller is a sad figure, a doddering old man, looking foolish on an international stage, after being praised for two years for his legal acumen and integrity.
Was his performance genuine or contrived? Was he trying to salvage his reputation as a card-carrying deep-state elitist by playing a sympathetic old man being badgered by nasty Republicans? Did Democrats throw him under the bus in their unending quest to nullify the 2016 election, regardless of the personal toll on him and his family?
It's clear he was not in charge of his own investigation. He not only didn't write the report, which bears his name, but it's uncertain if he even read it.