Oh, the patriarchy. It rears its ugly head once again.
Yeah, it's going to take a bit longer before the more general definition of sex (that doesn't involve penile penetration) to be overwritten in both minds and legislation. So it's very valid for Karen to point out that there's still a lot of that traditional thinking out there, including by BB's wife.
I'll also happily admit that the majority of my life has been with a very similar attitude; I didn't consider that I'd actually had sex with a guy unless his penis had gone into my vagina. I gave (and got) a lot of head before I was ready for that to happen.
The sex I've had with women has been "taking turns" at best, and more frequently, me topping them. My wish for BB's wife is that she's found someone who is a truly engaged and equal bedfellow as a girlfriend.