The image attached portrays the defence of Stalin as a waste of time at best, this is frankly charitable compared to most self proclaimed leftists who think the rehabilitation of Stalin is actively harmful towards our movement.
There are reasons as to why the rehabilitation of Stalin is indeed an important issue and not just some trivial thing that we must halt in order to gain a larger following.
The rehabilitation of Stalin's image is less about the rehabilitation of Stalin as a historical individual and more about defending and upholding Marxism.
Condemning or even refusing to uphold Stalin to at least some extent is equivalent to fighting our enemies on their terms. Why would we let our enemies decide who we should love and hate? There's no reason to allow the historical narrative that our enemies have constructed to be our historical narrative, that's just ideological surrender, may as well become a liberal at that point.
The total slander and demonization of Stalin's image is what leads most people into deviationist tendencies, tendencies which are totally harmless towards the bourgeoisie. It's only logical, if people believe Marxism-Leninism led to practically 1984 in real life, then why would they follow it?
Rather than keeping quiet about the USSR under Stalin, it is our duty to defend this period against the reactionary slander laid upon it. It was the first time in human history that mankind entered the socialist mode of production, and that's something to be cherished.
The first thing is to understand that though a fact can be true or untrue, accurate or distorted, etc., no source is without narrative bias and on top of that, the west has a history of doing atrocity propaganda, i.e. making things up that make another country/people sound cartoonishly evil (see: https://www.youtube.com/watch?v=NK1tfkESPVY)
Second, wikipedia is far from neutral and also far from an internationally diligent reference for sensitive matters of history. It might be fine for facts about ducks, but when it comes to sensitive political history, you might as well go into the White House and ask for "the unbiased view of history".
Here is some alternative perspective to consider for reading:
https://en.prolewiki.org/wiki/Joseph_Stalin
https://en.prolewiki.org/wiki/Library:Another_view_of_Stalin
https://en.prolewiki.org/wiki/Library:Stalin:_History_and_Critique_of_a_Black_Legend
Let me know what you think.
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: