I know it's kind of a personal gripe but I can't stand that first conversation with Tiffany, it seems to focus purely on wether or not men are capable of a 'friendzone' without even considering that neither really has it.
As I am neither a woman nor a biologist I can't speak with too much authority but I'm not here to write a thesis, just to air my personal grievances with the scene as even the central choice is just 'agree it exists in women' and 'agree it exists in women but also men'.
To clarify my stance on this I will be clarifying my view from this point, be warned I can be overly focused on details and am a rambler.
I don't really see the whole 'will fuck, won't fuck' ladder thing, they say it isn't about attraction but aren't those the same thing? If I am attracted to them(to a certain 'rung'), isn't it natural that I'd be interested in a (romantic) relationship with them and if I'm not attracted to them that I wouldn't be interested in them in such a way?
Someone can be a great friend but just not someone you're attracted to, they could even be someone you don't even really consider a friend but just happens to be part of the same group. In friendships mutual (sexual/romantic) attraction just isn't required so it's weird in the first place to assume a dude can't be friends with a chick without wanting to date her(it also kindof ignores the big gay).
To me, the whole concept of 'friendzone' has always just seemed like a 'nice guy' or incel concept for when they couldn't accept a girl not being interested in them 'oh it's not that I'm unattractive or would make for a poor partner, its just that she sees me as a friend.'. Not to say that people don't avoid getting in relationships with incase it gets weird(it's even a cliché) but that goes both ways.
On a side note, the biological argument used could also use some work. It's not that females really have a wider selection of mates in nature, it's just that, by nature of sexual reproduction, they have to be more selective and persue the best mate they can as they will, in most species, be stuck with the child atleast untill birth/laying/whatever but often for years after. The male, being free from this burden(in most species), is free to persue multiple mates per 'season', thus incentivising males to persue as many partners as possible.
The female 'pickyness' is also why the males of many species are more colourful than the females during the mating season. As the female wants the best mate(read 'genes') for the offspring, they will prefer the male who can afford(read 'survive') showing of the most with big colourful feathers or big, clunky antlers.
As a complety unrelated note, Brittany mentions multiple times that she wears a ring but I don't see one on her model. I wouldn't care normally but she mentions it like three time in the bar scene.