These hurt folks do find “new” friends who will reinforce and further justify their anti-marriage thoughts/feelings.
Acceptance does not meaning like. You can accept the situation, accept the person, and yet not like their behaviour.
I understand your feelings of being uncomfortable and repelled by such disingenuous displays. It clashes with core values/motivations or your’s. This is part of organizing and strengthening one’s belief system; a good thing.
The action to take based on such feelings is just what you are doing: Examining what you feel and why. You are find emotional understanding, which is what acceptance is.
Then, further acts would/should be based upon your beliefs/convictions. Living one’s values begets contentment.
D
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.