Democrats and their Deep State are so used to 'getting away with it' that now they have become overtly arrogant. They are so used to 'no consequences' for any act they commit no matter how blatantly illegal it may be.
Barr will never get anywhere being nice. Until he brings real force to bear, they will simply ignore him and laugh at him behind his back. However, if he does try to bring 'force of law' to bear, he will immediately be stymied and blocked by Democrats, Judges, the MSM, and other Deep State operatives. That it how they do it. That is how they get away with anything they want to do.
'Law' means nothing to a Democrat. They think it is just a big joke. And 99% of the time, they are right.