I don't think the problem raised in the article is limited to tagging. Friend A can recognize me in a picture from friend B regardless of whether I'm tagged there or not.
Then again, this is a pretty obscure problem, or more of a "problem".
Something that is scary is Clearview AI, etc. Then you don't need a person to recognize you, AI can do it. Add in Meta Rayban and it'll be harder and harder to maintain any shred of privacy.
Then again, this is a pretty obscure problem, or more of a "problem".