Thank you, A local coordinate system would not work for us as we are calling ST_Subdivide on the ranges of all species in the IUCN Redlist, so it is very much global problem. I believe ST_Segmentize would solve this for us.
Would you consider a documentation update to ST_Subdivide and the the FAQ warning about this? For the FAQ something like: NOTE: If you plan to re-project geometries after using ST_Subdivide(), be aware that the subdivision process may introduce additional vertices. These new vertices do not affect the geometry in the original coordinate system, but they can alter its shape when re-projected — especially if the original vertices span large distances. To mitigate this, consider applying ST_Segmentize() to your geometries before subdivision, ensuring that vertex spacing is appropriate for the target projection or geography-based calculations. and putting the example Regina gave in https://postgis.net/docs/ST_Subdivide.html ? I would happily make a PR.
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