He was a straw man, forced into the role. Look at Gohmerts piece on Mueller, it outlines a sordid past, to say the least…
So, he's got skeletons, and the crooks need a 'respected' figurehead to hide behind as they shape a false narrative to take down our beloved POTUS…
P.S.
If you note how 'respectfully' Nunez and Ratcliffe handled their questioning of Mueller, you could tell they KNEW he was forced into the position against his will…
So basically, Mueller was as clueless as he appeared to be, today. He literally had nothing to do with any part of the witch hunt…
Beyond that, AG Barr did him a solid by reiterating (via written memo) that Mueller keep his testimony within the 'purview' of his report.
So, Mueller comes off looking like a stooge today. But, when the shit hits the fan and the BARR/Durham train builds steam & lays open the illegal origins of the hoax, poor ol' Bob Mueller will be able to take some bit of refuge behind the notion that he was just a willful idiot…just as he's always been