But that is not a true democracy anymore then ...

Rousseau continues to motivate his second premise by providing a second source of instability for democracy. He raises the idea that populations of states are too large for democracies to function, stating that “it is contrary to the natural order that the greater number should govern and the lesser number should be governed. One cannot imagine the people remaining constantly assembled in order to attend to public affairs” (Cahn 341). In a democracy with thousands of people, especially during Rousseau’s time, there was no way to collect everyone into a space to continually vote on topics. Today, technology may exist to facilitate mass voting, but there is still not adequate time for all citizens to educate themselves and holistically cultivate their views on every issue. There is also the issue of the population wanting to remain assembled for legislative purposes. A large portion of the population could be too disinterested in politics or occupied by personal matters for the nation to remain assembled. Rousseau also brings up the point that a democracy “would not know how to establish commissions [to attend to public affairs] without the form of the administration changing” (Cahn 341). In a true democracy, when everyone participates in legislation, it is difficult to restructure the legislative branch, or develop a separate executive branch to enforce laws without altering the structure of the state to the point where it is no longer a true democracy. By creating smaller tribunals for political matters, the population’s participation in politics is reduced, thereby reforming the state into a new mixed system that is not a true democracy.

sauce: https://collegiuminstitute.org/blog/rousseau-and-democracy