So multiple data points would say that the CK drink benefit (published or not) is likely over. As I posted earlier, while the agents may have had flexibility to hook a CK up with a chit, with the new BP scan process, I don't see bartenders handing over free drinks if the system says we're not eligible.

Not trying to overthink this, but it's not a very 'premium' move. A CK/EXP on a cheap coach intl ticket can have a really nice sit-down meal at numerous F-class lounges around the world, but no more mid-tier liquor for us at our home clubs

ETA: Sent AA a Twitter DM on this and this was the response:
Hi, David. We never disappoint you like this. We know that premium drink vouchers may have been given to you as a courtesy in the past, but they are actually not part of the ConciergeKey benefit package. We’re working to ensure we provide a consistent experience to our customers who are traveling on eligible international itineraries. Of course, as an Admirals Club member, which does come with your ConciergeKey status, you are welcome to complimentary house beer, wine and spirits. We appreciate your loyalty and your honest feedback. We'll share your comment with the right team.