Yeah, they destroyed a nascent democracy(wasn't Tsarist at this point), destroyed economy with civil war that didn't recover for decades or maybe ever, killed millions, ended up with authoritarianism and imperialism anyway. Positive change. I guess by your logic millions of killed Russians is a positive change, that's not a serious conversation.

>Its problem was that not enough

There won't ever be enough, because it's unknowable who's not a true believer.

And even still, if you take power with force and violence, you still have to force people to behave willingly the way you want them or else it would be constant struggle and guerrilla warfare with the population. So it involves talking and propaganda anyway.