BUR #52979 has been approved by @evazion.
deprecate machinery
From forum #411774:
nonamethanks said:
machinery is an old tag that has become largely irrelevant now that we have vehicle focus, mecha focus etc. It should be deprecated. I'm looking at the first few pages of results and there's nothing that clearly ties these posts together, it's just random mechas and structures and mecha musume, not even well detailed ones.
Its other common use is the domain of the rigging tag.