I agree that most adults should be permitted to do as they like, as long as they are not hurting anyone else. If however, they post or ask publicly for input, I do not feel like I need to simply agree with them just to be supportive. Further, if innocent people, particularly children are being hurt or are in danger, I'm going to say something. Not that this is all that relevant to MUE's thing.

I thought she was just expressing and working through her feelings and not trying to dictate or control the other person's actions.

Stop, there just ARE some things that are wrong. Period. Pretending like they are not in the name of respecting someone's autonomy is really not helpful in the long run, in my opinion. From what I have seen locally it leads to dead children or children in jail for killing their mother's abuser.