Good game is repeatable, imo.
The guy is young and in decent shape.
The woman is old and in a young person bar.
A lot is implied in this setting already.
His approach and first words are congruent with him and the scene. But his level of filth has to be fully committed to. In the book, and in those interviews, he was totally in the zone.
Her decision to play along with the banter is just part of flirting. The dialogue is cringe, but a lot of pickups are cringe. The actress plays along though.
Was it good game to follow her into a bathroom and hope something happened ?
Attraction, trust, arousal= sexy time.
So much could have gone wrong here. But It's also the sort of experience that some guys but a lot of girls want to have.
It's not a gamble I would take but that might have been the only escalation window with the girl.
I don't see any of this as good solid repeatable game, because it looks so one off.
Pulling a cougar into bar bathroom after 30 sec seconds of chatting is possible, but not likely every time you see this happen.
That said you will see older women in places they shouldn't be. You will be able to flirt. You can find places within a venue for a quick hookup. But imo pulling this off is less about solid technique and more about inner game/delusional self-confidence.
Here's another one, that looks possible but not probable