You mean the Simconnect menu ?
The problem is, GSX is designed to work in a way in which it *reacts* to the user operating the menu, not the other way around so, we can't "just" disable the menu because without menu to react to, GSX won't do anything. What FS Labs is doing is replicating the user by sending commands to open the menu and select the options, so GSX works exactly the same, without knowing it's not the user acting on the menu.
Allowing to work without the menu would require a considerable redesign effort, since we would have to introduce some kind of protocol that all airplane developers must follow, to allow GSX work by remote control. It's something we always planned to do, because this would also allow to remote control GSX over a network or from another app, which might be useful for cockpit builders but, right now, after MSFS release, all our focus is to prepare GSX to work with it, so big updates like that will have to wait for the time being.