I think maps can be used for other stuff than just navigating. You’re quite right that this would be useless for actually navigating (which is probably the main purpose of using a map or other navigation software), but it could be a fun concept for looking back on things.

I don’t use Google stuff as much nowadays, so they might have gotten rid of it (knowing Google, I wouldn’t be surprised), but I remember that one of the sections within the Google maps app was a “Timeline” section. I used that section a few times to check whether I actually went to a particular appointment that was scheduled a month or so prior, or to check which restaurant I ate at when I was last in [city]. I also found it fun to look at the overview of things, like being able to see the pins corresponding to the silly road trip I took with friends a few years ago. It’s nice to look back every now and then.