He was the President, and used his office and power to get a 21 year old to engage in a sexual relationship....clearly the METoo movement met nothing to do you sexual predators in the DNC.Neither did Bill Clinton. She had a consensual relationship with him. In fact, his staff had to find ways to keep her away from him.
Ken Starr, on the other hand, dragged her entire private life into the open, made her the punchline of the late night comedians, etc.
Ken Starr was investigating crimes, Clinton didn't have to commit them. Clinton didn't have to prejure himself him in a seperate sexual harassment case, he didn't have to obstruct justice by trying to get Monica to lie for him, and promise her jobs etc.