If a modern woman abandons her traditional roles, wouldn't it be fair for men to abandon theirs?

Anonymous
So I've thought about this for a while, and I am comfortable dating a woman who is modern if she means it. And at first my female friends seemed supportive but when told them I won't sacrifice my life protecting her and I will split everything 50/50 they seemed annoyed. Which confuses me because I thought they wanted an equal or feminist relationship and they are happy to relinquish their traditional roles, but if I relinquish mine it's a problem.
If a modern woman abandons her traditional roles, wouldn't it be fair for men to abandon theirs?
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