> An additional reason is frat hazing, for the sake of frat hazing. When easy upper-middle-class money entered the field, it attracted some baggery.

I don't think it was money that caused this, but that many beloved tech giants were intentional built as fraternities by college dropouts and recent college graduates, many of whom did not themselves join a fraternity in college but got soaked in a lot of the atmosphere of them. It's most obvious in the case of Facebook, as publicly documented in things like the movie The Social Network, but it's a foundational DNA strand in Microsoft and Google and nearly any other big tech company that still prefers to call its headquarters/office park a "campus". (It's kind of a through line in the HBO show Silicon Valley too, how much tech companies intentionally copy the "pizza and beer and all-nighters and weird dorm room living" college vibe.)

(The presumption that most of these company executives never were themselves directly involved in college fraternities is that fact that they allow/encourage/build hazing rituals. Fraternities have had somewhat strict anti-hazing education requirements since the 1990s and most Universities have also had strict No Hazing Policies since around then. Since 2024, that education and policy enforcement has spread outside the Greek System to all students at most major Universities that get federal funding directly or indirectly, but before that it is certainly easy to understand how many might have missed the messages and education if they only saw fraternities from the outside.)