The question is not about his personality.
It’s about his actions, and you don’t know what they are.
Don’t make judgments from ignorance.
The point is that Sessions’ public statements provide ample evidence. He staunchly defends the crooked and craven FBI while never having a decent word to say about Trump. Sessions acts as if he has a bromance going with Rosenstein, yet it is the latter who let Mueller get so wildly and completely out of hand.
The public evidence is sufficient. Sessions is aiding and abetting those who are working to bring down the Trump administration.
Sessions is either not terribly bright and is fundamentally ineffective or he’s in bed with the swamp: A, or B.