I've recently found that the same friends and family who can't stand to hear my boring work tech stories are enthralled with the Macrumors top 10 hidden features type lists of things just like this. They just don't know. Apple's Tips app pushes the things they want you to know about, but misses tons of hidden gems like this.
And yeah I'm not really sure why one would even use Notes to scan anything that's not ephemeral, it's just getting locked into the notes database. Just scan it into iCloud or your local phone storage directly as a PDF and do whatever you want with it.
Same thing for QR scanners. Saw a co-worker bust out his Samsung phone and some random ad-infested app to scan a QR code. I said just open the Samsung Camera app, assuming (correctly) that just like Apple's camera app it recognizes QR codes just fine.