Earlier quoted context omitted.
Do you dispute that he answered the original question honestly and in a useful way? The fact he added a small joke afterward just adds charm. Lighten up a little ;) BUM!!!
To me it makes it HN feel that little bit less welcoming. I may be being over-sensitive, but it makes me feel like I'm eavesdropping on a conversation I wasn't supposed to be part of. Although, heck, maybe he talks about masturbating in front of girls the whole time.
To be fair, I don't know any guy that doesn't, while in the presence of women, talk about masturbating.
Though I want to make it abundantly clear that I am not defending him from downvotes or suggesting people upvote him (I didn't).