I assuming you mean the post was written from a right wing perspective correct?(that's what I got from your post at least)
I think it's written more from a well meaning liberal perspective. Probably doesn't understand the labels they're using, or at the very least oversimplifying people so that they crunch into the parameters they have created.
A They probably do mean tanky, and I myself have made this association in error. After all "Tanky" in the way it is used now is not as well known as the word communist, and many people who are tankies do describe themselves as communists.
B I've met people like these myself. One of my friends was in this camp until recently. Many of these people still look at Ukraine as it was pre Maidan, and don't realize the majority of people within the country don't support the fascist elements within. Plus there is Russian prop specifically aimed at hitting antifascists. They sold the initial invasion as a "denazification". If you are just listening to the words spoken by the leaders, and not seeing the atrocities the Russians are committing in Ukraine, I can see how one could fall for it.
C Describes a lot of the people in my part of the US actually, though, not all of them support Russia fighting in Ukraine. Rather they are more of a combination of this and E, where they want to get back to admiring Russia without dealing with the cognitive dissonance of Russia committing warcrimes in Ukraine, and also getting their ass handed to them.
D This used to be me until maybe 2014, and God knows where I would be today if I still acted this way. Basically anything that was considered "bad" of "forbidden", I wanted in. The upside is this is what led me into reading the Communist Manifesto, the Quran, and other "forbidden" materials that led me out of my close minded conservatism, but on the otherhand, I also read Mein Kampf, gave the BotD to many fascist and conferderate leaning people, and followed a lot of Russian news uncritically, and even had a Soviet idolization phase of my own. A lot of my mindset at the time was this really weird form of libertarianism combined with unbridled contrarianism.
E I feel this can include a lot of people from any perspective. Leftists who think appose NATO more than Russia's imperialism, Rightist who see the writing on the wall, and think the war should end while Russia is still ahead, to people who associate the increase in costs of living with the war, and simply want it to end no matter what ASAP for their own sake. I feel this could be expanded into several catagories, but then again, everything here is a severe oversimplification.
So are there flaws with this post: absolutely, but I don't think it was written in bad faith.