As well, I see your point there. However, part of my admiration for Russell's choice there is he was going against the thoughts of a lot of fellow travelers, and had less time to analyze the impact or literature regarding Lenin.
I don't really see it as a particularly bold move, since Russell wasn't really in a place where his endorsement was meaningful. He mentioned that Gorky had, on his deathbed, urged him to reconcile the Bolshevik cause, even as it had turned quite brutal and anti-socialist under Stalin, as both a dialectical product of the suffering of the protracted brutality of the autocracy and the interfering forces in and outside Russia, and as well a material improvement upon the conditions of suffering in Russia before the revolution. Gorky seemed to know, as did most socialists of that era such as Orwell, that the Russian state had its fair share of problems and if the final product of Bolshevism was to be viewed in a vacuum or under the terms of the capitalist West, it would be portrayed very poorly. But they also knew that the USSR was, both historically and in contemporary politics, a force for good. The idea that socialists and Marxists the world over were rank-and-file partisans for the Russian state and for Marxism-Leninism is mostly revisionist crap that springs from US propaganda that was used (effectively) to harass and imprison American leftists.
When it comes to how to exactly classify Lenin, I am not sure where a proper discussion could begin. The more "Marxist" left is always reticent to own diehard figures, as that segment of the social left is savvy enough to know that a lack of definition means a difficulty in attacking the idea or cause.
I don't think that this is true: certainly not with regard to Lenin. If you read any contemporary socialist/Marxist/leftist publications, you'll see that Lenin is fully "owned," even if outright support for him is discouraged. Lenin was, without a doubt, a right-wing deviation within the Russian communist community (from early in his tenure he clearly endorsed seizure of the state and sympathized and autocratic and anti-socialist methods for gaining and retaining power), but he
was a Marxist to be sure. Perhaps the most prototypically "right wing" thing about Lenin was that he, in the vein of all right wing thinkers, tended to reason backwards from expediency - even if he did so brilliantly.
Who is a proper, non-reactionary leader from the time period, and today? (Besides Trotsky, if you wouldn't mind.)
What makes Lenin reactionary besides his tyranny and despotic maneuvers in your opinion?
Yury Lutovinov, Alexander Bogdanov, Rosa Luxemburg, Anton Pannekoek, Karl Schroder, Amadeo Bordiga,
Even within the right-communists/Bolsheviks, there were substantially less reactionary figures (who were mostly removed during Stalin's purges) like Nikolai Bukharin, Vladimir Bazarov, Georgey Safarov, and Alexander Beolodoborov (that name is a nightmare, so I may have misspelled it). Trotsky had his own reactionary weaknesses. They just happened to be less pronounced than Lenin's. I think that the kindred spirits-esque historical relationship between Lenin and Trotsky is likewise fascinating.
Regardless, that depends on what you mean by "leader." Ultimately, the Bolsheviks won and history was funneled through their actions. Likewise, I think it's undeniable the reality of political action, particularly in adversarial circumstances, lends to right-ward policy sacrifices: for instance, the rightward compromises by Lenin and Trotsky - namely the subordination of the trade unions and railroading of left-communists and anarchists - were ultimately irresistible in their expediency.
Further, I need to look it up later, but there was a really exceptional biography of Stalin written recently that points towards his use of The Holodomor and other atrocities being initiated to reach Marxist ends as Stalin saw it, not simply to consolidate power. Although, later-Stalin has proved a figure hard to study, as he brushed, massaged, and stole the records so thoroughly with an eye towards history. I'll try to find it (Probably) in 24 odd hours.
Stalin could be argued, perhaps only by the coldest of utilitarians, to have been partially exonerated by the history of World War II. That is, his brutality, his centralization, his colllectivization, and his removal of anything remotely communistic or socialistic about the USSR ultimately hastened Russian industrialization to a point that it
could withstand Western aggression. Had Russia been in a state similar to where it was in 1917 when WWII broke out, Germany would have leveled it.
Those represent some crude ends. But
Marxist ends? Absolutely not. It's exceptionally hard for history and all of its intellectuals to really accept what Stalin as: a thug.