My own kid only a year or two ago thought that being drunk absolved you of all responsibility, and that saying and doing horrible things under the influence somehow didn't really count.
Why?
I have an 11 & 14 yr old - I have brought them up to respect boundaries, take 'no' for an answer etc from babies.
We've had discussions & conversations about Internet safety, sexting & its repercussions, safety when out & about alone & what to do if someone they know behaves inappropriately towards them etc.
11 yr old has just had his sex ed class - this has neatly led to age appropriate conversations about consent.
I've had several casual conversations with my 14 yr old about consent etc and Internet safety, his dad has spoken to him about porn and how it's faked, OTT, not a proper representation of loving sex etc.
I've spoken to him about drink, drugs & how it is his responsibility to ensure that there is proper consent.
All of those conversations have been natural, sparked by something we've been watching together or a big news item - so it has not even been a big deal or overly concerted effort.
For those reasons, I cannot comprehend why a male old enough to drink 'thought that being drunk absolved you of all responsibility'.