I wondered if Safegraph had an article on why the choice of H3 vs say geohash? I ask mostly because of the downside of how the H3 hex shapes rotate as you zoom in.
whoops found my own answer, white paper here https://assets.website-files.com/5f08ccbb93b299154d34ef7f/5f781dacb8dbcb6d2944a8e0_Why%20Placekey%20-%20Technical%20White%20Paper%20V3.pdf