I just noticed that Organic Maps also understands this tagging scheme, see this screenshot: https://files.catbox.moe/w5lpri.png

If you tap on the POI it shows the not drinkable sign. I found it in the changelog, this was added this March: https://organicmaps.app/news/2024-03-11/now-everyone-can-back-up-or-share-all-bookmarks-and-imported-tracks-as-one-kmz-file-with-just-one-click/

Nonetheless I removed the amenity=drinking_water in this changeset: https://osm.org/changeset/157620583

man_made=water_tap should be enough, there is some better documentation about this on its wiki page: https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dwater_tap

I will write a question about this on the wiki page of amenity=drinking_water, that page should be clarified, and the contradictions should be resolved.