I "own" ESO plus. In crown store "purchased" is greyed out. And the following excerpt comes from the ESO plus offering "As an ESO Plus member you have full access to all DLC game packs..."
I would like to challenge you on what "DLC" is and is not however...that distinction is not clear enough in the marketing material at all, and seems to be a dodgy move. If new DLC is not included it should say so prominently on the page showing that as the primary advantage of holding ESO plus membership, but its not.
I "own" ESO plus. In crown store "purchased" is greyed out. And the following excerpt comes from the ESO plus offering "As an ESO Plus member you have full access to all DLC game packs..."