Children and adults do need to understand that no means no. However they also need to understand that absence of 'no' does not equal 'yes'.
In the area of sexual consent, we need to understand the dynamics of coercion, societal pressure, fear of saying no, not feeling one has the right to express no, etc.
The idea that women saying 'no' will stop rapes is ridiculous and frankly, dangerous.
It is just victim blaming before the person has even become a victim. Hey, a whole new sort of blaming to do to women! Patriarchy - 1, women's rights - 0 or is that actually minus 10,000?
I just hope this will be done right and not presented as stupidly as it is being by the DM in the media in general.
I can see this spinning off into a stupid controversy over whether children are too young/will be shocked and corrupted, instead of a sensible thing that has to be done right so as not to do more harm than good.
There must be no inkling of females as gatekeepers.