that is not the leninist proposal: the leninist proposal is that inside the masses, there is always a minority that is most advanced than the rest, and that minority should form a vanguard party.
This is also the proposal of the italian communist left, which is the most represented in todays left communist organizations. Furthermore, vnaguard parrties have existed in every revolutionary situation, from the bourgeois revolutions to Catalonia (FAI).The working class makes the revolution, but there will always be organic cadre more dedicated than others.
It has nothing to do with a bunch of petty bourgeois intellectuals imposing their will.