Nerd circles are in no way immune to fashion, and often contain a strong orthodoxy (IMO driven by cognitive dissonance caused by the humbling complexity of the world).

Cargo cults, where people reflexively shout slogans and truisms, even when misapplied. Lots of people who’ve heard a pithy framing waiting for any excuse to hammer it into a conversation for self glorification. Not critical humble thinkers, per se.

Hype and trends appeal to young insecure men, it gives them a way to create identity and a sense of belonging. MS and Oracle and the rest are happy to feed into it (cert mills, default examples that assume huge running subscriptions), even as they get eaten up by it on occasion.