Oh the irony bit was just pointing out how it even occurs in groups of people that are trying to get rid of a dichotomy (that there are more than two genders),

Oh the irony bit was just pointing out how it even occurs in groups of people that are trying to get rid of a dichotomy (that there are more than two genders), but ironically they still form a different kind of dichotomy. (not taking sides here just supporting initial argument)