It has many disadvantages in terms of functionality. Some advantages could be: theming (line-height, inner margins, inner max-width), runs in the browser, easy to modify and build upon, produces HTML output.
I haven't tried the subject of this thread, but since I upgraded to Windows 10, the notes application has become ridiculously slow. Sometimes I have to wait, and wait, for it to respond to clicking or typing. I assume because it's doing some sort of network/AI enabled nonsense.
I'm using 64-bit Windows 10. It looks like it has some subtle visual updates, but I'm not sure what might have been changed under the hood. It seems to frequently hang when I try to paste into it, for an interminable amount of time.