Because they pay well.
Only lately have they had the funds to “pay well”. Either they have been fronting for someone else with money (and muscle for intimidation) or else Satan has been ‘guiding & providing’.... or both are true.
They have gotten away with too much.
You don't have to pay groupies. The media adore Clinton and everything he has been able to accomplish for the left. They have been deliberately covering up his scandals since they initially learned he might be able to beat George HW Bush.