Honestly, my reading of Marxist theory makes me look to the inverse of this. The uprising Marx and Engels talk about is a reaction to the injustice and instability of capitalism. As resources are consolidated, as capitalists become more entrenched, the forces that create a change increase. More people see it for what it is until eventually we reach a critical mass spontaneously.
Authoritarian communism doesn't work because it's trying to jump the gun. It comes from people seeing changes down the road, but they're not changes that they can force to come too early. The fruit of the proletariat ownership of the means of production and the withering of the state literally isn't ripe yet.
Ironically, it's acts of suppression that ripen that fruit. From active attempts to keep it from ripening to socially destructive capitalist practices like elevating C-levels and chasing quarterly profits.
An authoritarian imposition, to my reading, not only won't work, but slows down the process by essentially letting off steam as well as creating a negative association between communist social structuring and authoritarianism.
At least reform has positive results in the short term, potentially building greater association between distributed resources and greater social benefit at large. But even then, it may literally be the reverse that brings us closer to the end state of universal proletariat throwing off of chains and the eventually withering of the state.