There can only be 1 Wayspot per L17 S2 cell. It appears that the loving friends memorial is in the same L17 S2 cell as the library Wayspot, and it’s possible that after the location edit was accepted, the friends memorial became the Wayspot for this cell after syncing the new coordinates.
Gyms are determined based off of the larger L14 S2 cells, so I’m thinking another Wayspot in the L14 cell randomly became a gym.
More info on S2 cells and how they determine game play locations in PoGo can be found here: