AITA for telling my friend her "advice" was regressive?
So basically, my good friend, T, who I met through work, was having a pre-birthday drinks at her house. There were a lot of us there, in particular her friend S, who I am loosely acquainted with because we went to the same high school. We started talking about sexual compatibility with our spouses and partners and T in particular mentioned that she is often more low libido than her husband, and a few other people said the same thing, and T specifically said this has caused some issues in their relationship.
S then pipes up and starts bragging that when she isn't in the mood she just gives her husband oral and that T should do that instead. She wasn't even listening to T, because T was talking about specific hormonal issues and how hard this makes it, but she was sort of implying that T was in the wrong and her husband "deserves" something which instantly pissed me off and I told her so. I specially told her how incredibly regressive and could even be considered coercive and that it isn't good advice, it's just bragging. S got really upset and it really ruined things for a little while. When S was leaving, after she had drunk a lot more, she made a very rude comment to me and I responded in kind, and she said that I "insulted" her and her husband when the topic originally came up.
AITA?