Why the format scales
The local tool works for large groups because it simplifies the setup. The host only needs to choose a player count and pass one device for role reveal. Auto-generated labels like Player 1 through Player 99 are enough for a temporary party round.
Large rooms do not benefit much from extra input fields. They benefit from clarity, speed, and a host who can keep the round moving. That is why the product avoids player name forms and app-based voting for local sessions.