I saw a good article somewhere about disc brakes. The concept was that the big change disc brakes have allowed is the idea that the frame designers have a lot of options to make the clearances in the fork and chainstay areas to allow for bigger wheels and tires. That had been somewhat limited when rim brakes were used.
Having that room for big tires and rims, also allows frames to accommodate a 700C or 650B wheel, just with a swap.
You can now get bikes that allow multiple wheels to be swapped, one with a lighter and narrower tire, maybe your carbon fast club ride wheels, then swap to an aluminum wheel with more spokes, 36mm tires, greater cog numbers, and have your hilly gravel bike. All with one bike. Pretty cost effective as it allows you to plunk down the cash for a carbon frame, maybe Di2 or such.