I'm not sure there's much point debating Lenin- I think there is only in one sense to learn from th epast and a real revolution both its usccesses and where it went wrong. In both cases successes and failure workers' democracy is pretty fundamental. However, it's too simplistic and doesn't learn the lessons I think to put it all down to just one or two nasty types or one bad party- something Brinton recognised I think but still fell into a kind of reflex anti-Leninism popular with ex-members of trotskysits groups who have abused democracy- (Brinton was once in the Socialist Labour League I believe) whereas we need a more general view that doesn't see history as the preserve of great men- evil or good depending on your prediliction- but of social forces. The question of democracy and workers' control are vital and they are down to more than just a debate about one group versus another.
Unfortunately (or otherwise), I haven't got time to answer this in any detail. I cannot I'm afraid refer to original historical documents or quotes, nor am I sure what it would prove, though from memory I can recall one: Lenin to the YOung Communist Leagues
“I must say that the tasks of the youth in general, and of the Young Communist Leagues and all other organisations in particular, might be summed up in a single word: learn…in such a way that Communism shall not be something learned by rote, but something that you yourselves have thought over...”
http://www2.cddc.vt.edu/marxists/archive/lenin/works/1920/oct/02.htm
I think though that the Bolsheviks were very democratic in their practices during the revolution- they made what many including many in the factory committees and the soviets thought were some necessary but deeply regrettable compromises after the revolution and undoubtedly with the benefit of hindsight the suppression of workers’ democracy was a fatal mistake. It wasn't only the Bolshevik leadership who closed down many facets of workers' democracy during the civil war- many supported this what they saw as regrettable necessity but that we should definitely now question. Certainly we should also be highly critical of some other decisions such as the banning of working class parties and factions.
Soviets or workers' councils were of course distinct from the Bolsheviks though they did have a majority of workers' delegates at the time of the October revolution. Trotsky of course was the elected leader of the Petrograd soviet.
I have read Brinton's piece- I am not an expert on this historical period and have not studied the original sources. I have read other pieces here and there by Brinton that I admire but this piece seems to me skewed by a kind of anti-Leninism that is perhaps understandable given the unsavoury practices of Leninists at the time but I think from my non-expert stance overemphasises the case. We need to disentangle Lenin from the distortions of Stalinism and Stalinised Leninism.
I've also read Rabinowitch's The Bolsheviks Come To Power which, whilst not without criticisms paints a different picture seeing the Bolsheviks win in a democratic workers' movement. It could hardly be otherwise unless you believe workers are dupes or playthings of revolutionary plotters- the real history of the Russian revolution and indeed any revolution seems distant from this.
Yes mistakes were made even mistakes that paved the way for catastrophic defeat, defeats with which we are still coming to terms. It is too simplistic to ascribe all these faults to the 'leaders' I think.
The real lessons must be the absolute centrality of workers' democracy to any revolution and the necessity to have an international movement.
We should certainly study history- to learn from the mistakes as well as the successes- I think though the focus should be primarily on the present.
To get this back on thread then whatever the virtues or otherwise of comparing politics to learning, it is absolutely essential in my view to make sure that self-direction, self0activity and collective decision making and accountability are at the heart of all political movements of the working class. Only we can free ourselves and in through struggle we learn to become fully human.