For the general use case, of course.

There's a good argument to be made for a special checkbox / button that you press infrequently as a reward for completing an activity for a habit you are building.

Nah, that's "most efficient" checkbox.

I meant what I said. I don't enjoy having my time wasted. Efficiency is satisfying.

That's why people only watch trailers instead of sitting through an entire movie.

It’s a checkbox.

We already distilled the complexity. It’s beautiful for the simplicity. A checkbox with an “experience” is the tacky chromed out Harley cruiser next to the essential cafe racer that is… well, a check box.

Less is more.

True. Except for in this specific case, where the checkbox is in the centre of attention instead of it's usually supporting role. Other than that I completely agree!