The harm I saw happening was W telling him that cheating was no really no big deal. And I refused to allow my W lack of morals to make this divorce some kind of thing that is no big deal. He needed to know why his mother was acting this way due to the family history.
And for the record, I have told him about dysfunctional people in my own family and why he should embrace such behavior. So it's not I solely sh*t on W family, but give my own a pass. Trying to instill real life lessons for this kid. Because when he is with his mother, it's three levels of dysfunction for a solid week. MIL who I prefer to not be in his life. With her bouncing from man to man, them complaining when no one does something for her. 50 years old and has accomplished nothing in her life.
SIL that is so much of a parrot for her sister that she would support anything regardless if it would somehow damage my son. She loves S14, but having her head up W a** is her priority. So that is the trio of dysfunction.