In group Chanukah celebrations one often sees that the entire gathering recites the brachot for lighting the menorah in unison, despite the fact that only one person is actually lighting the candles.
For those who are reciting the bracha without performing the associated action, is this a bracha levatala, and if not, why not?
I asked a related question once before, but never got a definitive answer. I did, however, receive a comment that suggested that this widespread practice is incorrect. However, other questions on this site suggest that this practice is common, indeed normative, even in shuls.