This is not true for lots of software developers who grew up poor but got rich. I wear shitty clothes, live in the ghetto, my hobbies are video games, cycling, and porn, and when speaking I code-switch easily. If anything, it's the other way around - when I'm around city folks with their mannerisms and discussions about veganism I clearly see I don't fit and I come across as a neanderthal despite my income being around top 10%.