You are forgetting that a huge category of people need all their notes in one place, organized and separate from everything else. Sure you can do this with Notepad and manage everything in folders etc. but that takes significant effort. Effort that many people don't want to put in. That is why most note apps, even something like Notion, exist. To simplify the organising process. You aren't paying for the editing experience but everything else.

Of course, for very simple note taking you don't need this but it again comes back to my original point that by using a dedicated app, everything, including the rough 1 minute notes, are in one easy-to-find place.

I myself take a lot of txt notes but easily lose them as well. Fortunately for me, they aren't important and I rarely need to access them again but it's always nice if I have them all in once place so I can go over them and see what I wrote/did.

Disclaimer: I am a developer of a note-taking application called Notesnook[1]. Some might say it is a (hopefully better) alternative to Standard Notes.

[1] https://notesnook.com/