“Whenever we tried to give people more choice in the onboarding it failed. Users have a limited fatigue budget — they're only going to make so many choices. You need to make sure you're spending that mental energy on exactly the things that matter.”

Too Much Choice in Onboarding Is a Consistent Loser — Default Beats Customization

Opal ran multiple tests offering users flexibility to customize their blocking schedule during onboarding. Every variant with more choice performed worse than the opinionated default. Onboarding is not the place to exercise preference — it's the place to get the user to their first win as fast as possible. Let them edit later; commit them to something automatic first.