Why is the “other woman” blamed more than the cheating man?

I was disappointed upon hearing two poder female family members saying the other woman got involved with a married and stole him. They went on with saying how a man is a man but she destroyed a family, a marriages.

Too much focus on shaming the mistress. Why? Unless she pointed a gun at him, nobody steals you. Personally my anger would go towards the cheating bastard. If he had valued his marriages, he could've told the other woman to take a hike. He wrecked his own house. The other woman only helped him in wrecking it but he destroyed his family.

You don't hear too much people blaming a lover nor saying "he stole her from me" if a he or wife cheats. Either all the blame goes towards her or it's 50/50 (both blamed equally but never is the other man blamed 100%, not even if he was really the instigator.

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2 mo
I would blame the cheaters. They're the ones that promised loyalty.
Why is the “other woman” blamed more than the cheating man?
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