Perhaps from his perspective, they are not on the left. It is relative to the stance of the individual.

NBC sat on the evidence that Avenatti provided an affidavit about Kavanaugh’s alleged actions that the person who supposedly provided it said to NBC it was false.

Through the hearing, NBC sat on that news because it discredited Avenattis representations against Kavanaugh.
That is not editorial stuff, that is hiding the news you don’t want known for political purposes.