I couldn’t agree more.
Around 15-17% of all women suffer from vaginismus, according to Google. That is a HUGE amount. At least one out of ten girls will be unable to have sex when they try for the first time. I think this is basic info that should be told to everyone in sex ed, also to males. This will make it easier to recognize the signals.
About the rest I’ve made a separate post, I hope you don’t mind.