wetland=tidalflat controversy

I started a new wiki talk page discussion on the conflicting/controversial usage of the wetland=tidalflat tag regarding implied and explicit surface types: * Change of definition to mainly encompass mud and discourage use on sand flats Also posted a comment on positive related changes being worked on by the carto team: * openstreetmap-carto PR: #5067 Use dedicated style for landcover polygons over water