Probably a higher ratio have, yes. Less distracting things to fool around with when you use a pen, paper, and your brain.
Usually people take notes for a reason, they don't just take notes and toss them
It's not controversial to say Obsidian tool tweaking can be fun and productive, but could also tap into the exact wrong parts of peoples OCD brain.
No reason to be hostile for an observation of a community, especially as low stakes as "notetakers." I don't think they have a monopoly on taking notes?