I feel like you're deliberately misunderstanding me.
I am saying that I do not think that pointing out potential internalised misogyny is itself internalised misogyny - that's like saying pointing out abuse is itself abusive. It's ridiculous logic.
Especially when men on Mumsnet are pulled up on their (not internalised, just plain) misogyny, or patriarchal viewpoints. If women were held to different standards than men, then perhaps pointing out (internalised) misogyny would be misogynistic, but if anything, the men are treated much more harshly.
People might disagree with others' positions, but if someone would make the same argument to a man or a woman - about a patriarchal norm that frequently harms women - it's not misogyny.
And again, you're making it women-specific when it isn't. No one has as much agency as they think they do. Everyone is hugely shaped by their environment and current norms, and generally don't realise the extent to which they are. Pointing that out isn't disrespectful, it's an observation about humanity.
For instance, most women wouldn't entirely depilate their vulvas or armpits if it hadn't (somehow) become a social norm in our culture and time, but many will argue black and blue that they just can't tolerate vulva or armpit hair, and they do it for themselves not because of society - which is patently untrue. After all, men get along fine without shaving their public and armpit hair (ETA: and women in other cultures and times).
Men have fewer things like that to adhere to, but there are many things I'm sure they do purely because of social norms, and not because of any innate desire to do so.