When I'm looking for a randonneuring bike, I'm looking for desired stack and reach to fit my proportions, tire clearance, and mounts. I'm not a bike geometry wonk; I want a bike that likes to go in a straight line but still turn without any drama. Light is better than heavy, smooth is better than harsh, stiff in the right way is better than noodly.

I think there are more options today, fitting those criteria, than ever. Whether marketed as endurance, all road, gravel, or adventure does not matter.

Anyone riding vintage steel on a 1200 isn't doing so because that was some epitome of bike design, they're doing it for style. Nothing wrong with style for the sake of style, if that's your jam. At PBP 2023, a kid did a skip stop into the Loudiac control on his fixie, dressed like a ninja. Also style for style's sake, and I also respect that choice.