Even without an external todo system that reinforces remembering the task tomorrow, but the article acknowledges you can reconcile with an external system at the end of the day.
Would I stick with it? Dunno. But the general ideas are the same as extracting a Today list in GTD daily (given that the original system was designed around index cards and paper), or as the way BuJo doesn’t roll over unfinished tasks from the last rapid log automatically and makes you define them again each day. In the latter case, the repetition of recalling and recording the task every day is an explicit feature.
As for putting things on the list as you do them, I actually have an electronic version of that on my phone already as a shortcut called Give Me Credit.
If I ask Siri (on phone, HomePod, etc) to give me credit for a task it goes into Todoist as a Today task in my Credit project, prefixed with a cash icon ready for me to immediately check off. That way I don’t give myself the impression I never get anything done just because it’s not sufficiently planned first.
ADHD is an umbrella term and we’re all a little differently affected. I don’t think there is such a thing as “this organizational system isn’t for ADHD folks.” It’s just not for some folks, period.