Sounds good if you can really do the brain dump and then not worry about it. Some people make their massive lists and then spend half their day, every day, reviewing and reorganizing it.
Excessive reviewing can be from lack of trust in the system, or pure procrastination while appearing productive.
Nobody starts out trusting. You have to see it work before you can stop worrying.
The busywork aspect can be mitigated by allocating the daily review time and then refusing to fiddle with it. You might still procrastinate in other ways, but one less way is still good.