Right now, since it is using Jigsaw to spawn the waystone, it may or may not spawn one at all, and it also may just spawn two or three depending on RNGesus.

Just a suggestion, when the chunk is loaded the first time (or the first time a waystone is activated, etc), pick whichever Waystone you find first, then do a search within the range of the village and delete all other Waystones that have also just loaded for the first time? Should just be an extra boolean for each stone.

If MinecraftForge/MinecraftForge#6939 gets merged, this could probably be easily done by forcing the houses pool to only be a waystone if no waystone has been generated in range yet.

Is there any sort of interim patch that would allow them to generate in Villages again, for 1.16.5? I would gladly take 3 in one village, over none.