(Proverbs 13:7 KJV) There is that maketh himself rich, yet hath nothing: there is that maketh himself poor, yet hath great riches.
I don’t see any value judgement here. Everyone “pretends”, as the NASB puts it. The idea of masquerade is part of both “rich” (6238) and “poor” (7326). You might translate these as “one who riches himself” and “one who poors himself.”
Again, I don’t see that one is good and one is bad. Both are concealing what they are. Maybe the idea for us is the saying, “Don’t judge a book by its cover.” Or maybe it is a warning. The warning is for us, not the person hiding themselves.
So? This recommends that we treat people as individuals not as members of a social class. Courtesy is the default option. It is a good place to start.