For anyone looking at this in future, the discussion about it is on https://www.openstreetmap.org/changeset/148228217 (which also links to the Talk-GB threads).

I object to my changeset (https://www.openstreetmap.org/changeset/148762569) being described as “removing valid data”. It changed the tagging from something which was discussed on Talk-GB (which was not mentioned or linked to in your original change) to something which is documented on the wiki. Both of those are valid taggings. The changeset did not _remove_ any data.