I can say for me that after my father died I posted pictures of him at some of his favorite places or from favorite trips.

Google Maps app sees that you took photo near POI and later in the day asks you in notification if you want to share it on maps.

You review the photo and go "lol, sure".

At least for me that doesn't even feel like posting due to how frictionless it is and that it's about natural discoverability (someone has to click that POI and scroll through photos to find it).

I will share a thread from someone asking where was their congratulatory email that they've come to expect from Google Maps.

https://www.localguidesconnect.com/t/e-mail-from-google-cong...

For that sweet local guide score.