I think you definitely highlighted the other side of the coin with Notion: once you're out on the edges of what it can do, there's no way to extend/change/modify.
The performance also comes to mind. Emacs will always be faster vs. an Electron app.
I think I just need to bite the bullet and take some time to really learn Emacs/org, I think after the initial learning curve the flexibility and power will really pay off.
One other question: Sometimes I'll be listening to a podcast, or reading, or will just generally have a thought or idea, and Emacs isn't easily reachable. What's the best way(IYO) to get that in to your system?
Thanks again and I'm hopeful you'll keep up the writing, it's done quite well.