That date is just when the wikipedia sentence was written, probably becuase it tracks with exactly this controversy about police violence. The facts its cites about support within the medical community certainly aren't new.
I don't know why this seems so surprising to some here. The police use loopholes like everyone else does. If this gets them off the hook for borderline use of violence, of course they'll use it. If it's used inappropriately, they should stop.
