Given the many first-hand accounts of ordinary everyday harassment and men who flat-out do not seem to understand what is and isn't inappropriate, or what the words "no" or "I'm not interested" or "leave me alone" mean, yes, it does seem there is a significant population for whom this type of basic education is absolutely and vitally necessary.

Think of it like driver licensing -- many people, probably most adults, are, with a few lessons, perfectly capable of safely operating a car in most situations. And would seek out those lessons (whether paid from a professional teacher, or informally from an experienced friend or family member) regardless of whether they were required. But enough people wouldn't that we have to force every single person who wants to drive to obtain a license through a process that involves examination of their knowledge of driving and traffic rules.

So "teach about how not to harass/teach about consent/etc." should not be interpreted as "this person is calling out 100% of all men alive as well as me, personally and directly, out of blind hate", but rather as "just like driver licensing, there are enough assholes out there who ruin things that we probably need to make sure people are taught this".

Also, mandatory teaching/training ensures that nobody can pull a "well I didn't think that was wrong" excuse -- if people are taught what is and isn't acceptable, and there's a record of them being taught it, then they know it's wrong and we know they know.