I don't disagee with this comment at all. In fact, I think one can and should have these discussions, in detail, by the end of a second date if someone is looking for a marriage partner. The book "Date or Soulmate: How to Determine if Someone is Worth Purpuing in Two Dates or Less" by Neil Clark Warren is excellent.
I will remain cleibate until I remarry, but I am not going to wait six months only to possibly find out that a gal I've been dating is not all that enthusiastic about sex as an important part of a marriage relationship. If sex is not important enough to a gal to discuss by the end of the second date, I would only assume sex is not important to her. On the other hand, I would not enter into a discussion of this area if there were not not a lot of other important similarities in personalities, interests, hobbies, spirituality etc, in the first place.
Yeah, there are deal-breakers out there other than sexual compatibility. Best to rule those out before the FIRST date.
In my own case, first thing I decided was "No Democrats".