Because the Women's March is like rabies - just because it's detrimental to the United States doesn't mean it won't cause collateral damage. Since the Women's March was specifically a response to the Democrats' failure to install a woman who wanted to commit acts of war against Russia and its allies in service of regime change against Russia and its allies, it is good for Russia if the movement implodes.
Why would Russians target something that is detrimental to their political adversaries?
Feminism is a debilitating disease.
Because the Women's March is like rabies - just because it's detrimental to the United States doesn't mean it won't cause collateral damage. Since the Women's March was specifically a response to the Democrats' failure to install a woman who wanted to commit acts of war against Russia and its allies in service of regime change against Russia and its allies, it is good for Russia if the movement implodes.