When you put it that way; I guess after some reflection, I realize my algorithm is optimized for efficiency and I immediately try to hone in on strong agreements or disagreements in taste/politics/etc. so that I don't waste my time getting to know a shitty person, or miss out on a potential best friend.
These means engaging in a level of provocative speech/behavior that sometimes makes people uncomfortable (not my problem of course; I have little interest in euphemism or politeness, my energy goes toward transparency and kindness)
Progressive self-disclosure can have its uses but if I can't break the ice in two minutes with a stranger, it's not a good sign for our compatibility.
Now, I did grow up in an environment where I was never really allowed to exist. I am an atheist raised by an hyper-abusive, hyper-religious, ex-boxer Catholic deacon in an extremely conservative part of the United States. The police were at my house every couple of weeks. So this may have influenced my comfort with radical transparency; I had to learn at a young age to literally fight constantly for my right to think my own way, and I'm ready to do that at any time.
But I have definitely been in some neighborhoods where the most interaction you should have with a stranger is a nod of the head, anything more is asking for trouble no matter who you are. I can vouch that there are harsh urban environments which prevent, by design, even progressive disclosure from being a safe option. This effectively kills any chance at real unity in the community, and drives up crime statistics, further justifying the continued disunification tactics.
It would be cool to catalog, categorize and analyze these kinds of social algorithms. It seems like an interesting cross-disciplinary field, involving psychology, sociology, game theory, cultural anthropology, etc.