A woman being drunk IS NOT a green light that you can have sex with her. A woman telling you that she wants to have sex with you, is.

Alcohol often leads people (men and women alike) to do things they would not do sober. Sometimes they get drunk intentionally because they want to do things they would not do when sober.

I couldn't tell you if a majority of people do this. I couldn't tell you whether or not anybody I've slept with has ever done this. I can tell you that every time I've slept with someone, consent was very very clear. Thus I saw no reason to ask in the morning "did you get drunk because you wouldn't want to have sex with me sober?".