“So why not argue against the 13th Amendment or the 19th, then? “
They do. Education requires understanding points of view. Obviously, there were people that were against such 13th and 19th protections so it had to be passed to provide them.
Studying those points of view is not the same as adopting nor supporting them.
This is why college isn’t for everyone. Some people are just too stupid to teach.
Studying points of view is not the same as being forced to debate from that point of view, in essence selling it.
Some people obviously know little and understand less about understanding people & points of view as they relate to mass insanity.