H3 hexagons by Uber solves a similar problem with better characteristics- when people talk locations, they typically also want to get distances between locations. Because h3 is hexagonal (pretty much) it has a nice property that all immediate neighbors are the same distance away, which makes traversal and distance easier. This is not the case with squares.
This is actually almost exactly what Snapchat stories - now also on Instagram and Facebook - achieve. You can click through your friend’s updates, reply as you want, and when you’ve seen everyone you’re out of content until someone posts again. I kinda like using these apps in this way, because it’s still cool to see what people are up to, usually more genuine, and harder to get sucked down the scroll.