Nope. WA uses server-side group management, with Signal its purely on user-side. The message is revealed to be a group message on client-side. In theory, since

Nope. WA uses server-side group management, with Signal its purely on user-side. The message is revealed to be a group message on client-side. In theory, since the group messages are a burst of packets of the same size, the server can distinguish between messages to groups,and drop them if it wants to, but that would be interference of communication which, IIUC, is a felony.