Somebody has to say the uncomfortable sentence first. Whoever does usually ends up running the room.

Groups stall around the thing nobody will name, and the stall can last a long time because every person in it is waiting for permission. Saying it aloud breaks the deadlock and marks you as someone who deals in reality, which is why authority tends to drift toward that person afterwards. The cost is a few seconds of being the one who made it awkward.

Choose the meeting or the dinner table where this keeps happening and decide in advance that you will be the one. Write the sentence down beforehand if that helps. Afterwards, notice who thanks you privately.