I think I need to actually read the studies for this, because this has been completely contrary to my personal experience on this. I'd like to see how they're controlling their variables.

I cannot read my own handwriting anymore, so I almost never write anything by hand now, but when I was in college the first time I took notes by hand in a notebook, and later moved to typing on a laptop. I don't feel like I retained appreciably less information when I was writing by hand, BUT I did have the ability read my notes later, in addition to being able to search and index them easily. Additionally, I type a lot faster than I can write by hand so I was able to write down more detailed notes during lectures.

Now, obviously, college-age Tombert was 18-20, not a young child, but I still do school, and I still pretty much exclusively type my notes. I've found that the utility of using Obsidian to be able to try and figure out ways in which things are connected is just as valuable to me.

I'm not a complete idiot; it's possible that I'm actually not learning as well, but I really have no desire to go back to physical notes.

ETA:

I would like to point out, I've always resisted the urge to simply transcribe what the instructor is saying. I always try and summarize/break-into-bullets, because I feel like the summarization is part of the learning process; reading the article it looks like a lot of people typing notes are just larping as stenographers, which I would agree is a terrible way to actually learn.