I think those of us who fly a lot can figure out where air crews stay (or where pro sport teams stay for that matter, etc.) just by ending up in the same hotels on a regular basis and seeing them in the shuttle, in the lobby, etc. etc. I can name several in different cities.

But there is a difference between that knowledge and putting out in public where a quick Google search would let anyone easily know though - I can absolutely see why AC unions / crew wouldn't want to publicize it.