It actually is important and if I was hiring you I'd find it useful to get a more comprehensive understanding of your experience, especially if there's something I'm aware is a very challenging problem to solve. And it would provide more things to cross-examine in interviews to make sure it's not fake. The idea that people hiring are saving time by not reading an extra resume page when deciding on someone that will hopefully work there for years is ridiculous.

For some reason that's the minority opinion because everything has to be dumbed down now.

And how is a resume with the most important or recent work highlighted and at the top worse than a resume with that plus the rest of your experience after it?