That sounds entirely plausible. Many of the hobby electronics projects I make require at least a 6V supply because of exactly this. I usually use a 9V wall wart, though, because those are very commonly available (so are easy to scrounge up).
Stuff like this. [1]
[1] https://www.digikey.com/en/products/detail/cui-inc/VXO7805-5...
You are absolutely right that there is a role for LDOs in modern devices.
There's no reason for most hobbyists to be using super hot, super inefficient and super constrained high-dropout linear regulators from 1972 when there's a pin-compatible all-in-one switching module for roughly the same price. To pull more than a couple hundred mA at the lowest voltage differential you need a heatsink!
Why mess around with a 7805 when you already have a dozen 5V power supplies lying around the house?