Their job is to make money, reporting the news is a secondary concern. The advertisers pay MSNBC/CNN for access to the viewers, viewers are the product, not news. That is how TV works in general. Liberal viewers loved this story, followed it obsessively. The appearance of accuracy only matters because of how viewers feel about their brand (they won't tune in if they feel the brand is too inaccurate, then the advertisers pay less to run ads on that channel, and so on). Unless misreporting news is enough of a problem to fuck up viewership (or cost too much in libel suits) they are going to feel just fine about it. Liberal viewers who loved all the autistic details of the collusion story are absolutely willing to accept the excuses offered by MSNBC/CNN. It helps to know about this dynamic when you're trying to interpret the news.
to be fair, I believe that the dude that metoo'd george didn't accuse him of rape, but of being abrupt, and only wanted an apology.