Aw man what if one of the secret reasons Logan hates Sandy so much is because he's witnessed how much Sandy's dominated and demeaned Sandi over the years? And it reminds him of Noah and Rose? And Logan has no clue that's the exact same way he treats Kendall, and later Roman?

Like so many abusers, Logan hates other abusers and lacks the self-awareness to recognize he's the same way. That's probably why he goes out of his way to superficially make sure Shiv grows up strong and opinionated, because that way he's not at all like Noah or Sandy in his mind. The idea he could damage his sons like that doesn't occur to him because they're boys. After all, Noah’s abuse only made him and Ewan tougher, right? So sons and nephews are just built to take it in a way daughters and nieces aren't. It's disgusting to treat girls that way, and only proper with boys. Makes them men.