Those studies have been done, although not by me. People are really, really bad at working out how affluent other people are by inspection. That is one of the reasons I brought the topic up - the research I've seen suggests this sort of "I looked at it and it seemed ok" approach is very misleading. What people actually look at aren't things that indicate affluence.

If you look at the other comments you can see people are actually keying off how much of a sense of community and civic pride there is in an area, as well as commercial activity. Which is going to probably distinguish between upper and lower class - even that isn't certain - but that isn't actually relevant to the topic because there is always going to be an upper and lower class. It isn't going to get a great read on how affluent they are at any given moment.

> There's a reason your original post is a very light shade of gray.

In an academic sense, yes. But no-one knows what it is - some people might be in your shoes where they read "affluent", misinterpreted it and had a fear response. Or they might have other opinions as some of the other comments lay out. Or there could have been other reasons.

One of the philosophical underpinnings of HN is that downvotes don't contain a lot of information and are a poor tool for promoting discussion - it is a wonderfully mature approach to moderation.