Ha ha ha. That's funny. You should use Bridget. She says it right.
That is the "connect to to client" (typo!) command in the MB3 Events command group. (You can always use the Search function in the tree editor to locate specific commands, btw -- so, searching actions for "Connected to" would have pointed the way.)
As you will see, it is using payload {3}, passed to it via the event MB3.Session.Set.
Two solutions (apart from leaving it because it's hilarious):
If you only use MB Classic, replace {3} with the phrase Media Browser Classic in the TTS.Speak action.
If you use more than one client, you should add a Results.Replace above the TTS line, and then change {3} to {LastResult}, otherwise it will not identify your other clients correctly.