What else would an acquaintance ask you about? All parents want their kids to marry stable and supportive partners, but the standard for what counts seems a lot lower in other communities. An accountant is a great profession and a doctor is an overachiever.

you rarely find people who live in the poorer communities with bad reputation having close friends with people from richer neighborhoods here.

What about poor people from the rich neighborhood, though? I see blue collar professionals befriend white collar professionals frequently. I don't see where a poor person from a bad neighborhood would have met and interacted with someone from a rich person enough to become friends.