What does the launcher do with regard to the operation of the game that cannot be done within the actual game itself? Is it due to a technical limitation or simply there for the convenience of the players? Are there alternatives to such methods of starting the execution of games?
that’s not actually a guarantee: BG3 has multiplayer and works just fine without the launcher. as do plenty of others.
--skip-launcherin the launch options on Steam, for anyone who doesn’t know already