I don't agree about the overlap, as popular is new and shiny and stimulating, whereas boring is old and proven and, well, boring.

I wouldn't leave technology choices up to LLMs anyway unless you give them all the context and requirements. And this is where experienced software developers come in, who know and / or have experienced the short and long-term effect of technology choices (whether they were boring or not). LLMs can mainly go by what they read on the internet, both hype and sales pitches and (more boring and less frequently posted) retrospectives if you don't give them enough context.