It seems that some bochurim are not aware of recent Jewish history and use “Reform” simply as a swear word. There is a difference between a non-halachik movement, like Reform, and possible halachic disagreements, even vehement ones. Say, R Feinstein was against women learning Gemora, his son on law respectfully disagreed. I am not sure where R Feinstein’s daughter stands on this, but at least one of granddaughters learned Gemora … would it be an insult to R Feinstein to say that he married his daughter to a Reform Rabbi?!
Again, your position might have strong support, and you may be able to explain gemora Kidushin to Beruriah (is it the one that teaching daughters Torah is teaching her silliness or the one that if someone does not teach his son a job makes him into a gangster?) – but don’t call people inappropriate names.