CNN/MSNBC/NYT others, don't care. They don't care if what they say is true or not. They really don't care.
If it is damaging to Trump, or anyone in his administration, or anyone he has ever known since he was born, or any Republican at all really, their motto is REPORT IT AS NEWS FIRST! Let the American people figure out if it is true or not. When you get caught, issue some page 8 non apology, apology, and then keep doing it.
They do this deliberately and with intent. It is a very old propaganda technique. Keep spewing lies and rumors as truth to defame an opponent. Who knows? Maybe you'll get lucky and one of the thousands of lies will turn out to actually be true after all.
The most important thing is to keep the shit throwing firehose on your target full force all the time. At the least it will throw them off balance.
The people who listen to and read this crap are like people who read the National Inquirer. They don't care if what they are reading is actually true. They just crave the drama.