It’s not the difficulty, but the time commitment the difficulty requires.
I enjoy games that are difficult that allow me to retry 5 seconds later. It’s why I can enjoy Super Meat Boy, Neon White, VVVVVV, etc despite my busy schedule that affords me maybe 2 hours a week for gaming.
For a Souals-like you have to spend way too much time retrying and attempting to get good.