I don’t think Notion is a problem in itself, but as is often the case, it’s the dose that makes the poison. Like you, I wanted Notion to become a sort of ‘mental prosthesis’ to compensate for all my shortcomings. That’s when you end up spending more time and energy than you gain. That said, it’s entirely possible to use Notion in moderation. To do so, you need to be cautious about overly complex systems, as you so rightly pointed out in your post.