All you need to do is to download the Grindr app like I did to understand why they’re more “Neapolitan”. The term “Vanilla” is often used in jest by gay people on straight people. Odds are, their favourite flavour of ice cream is also actually vanilla.
They install Tinder on their phones, go on a few dates, then settle down with their third match and have boring vanilla (missionary) in their Punggol BTO until the day they die.
They dress the same, eat the same, and even date the same.