The funny thing is that the "Department of Government Efficiency" is not a government department, or any kind of official government entity. It is probably (or will be) a federal advisory committee. Federal advisory committees have official rules on open meetings and reporting.

So the fact that they think it's a good idea to just start a bunch of chats on Signal should be surprising, but it's Trump and Elon, so I guess it's just another thing in a long list of insane things that just happen, and we just kind of ignore them and pretend that everything is fine.