You're not wrong on any point of that, in the final analysis, BUT, I think it's worthwhile to compare tankies to the current set of kool-aid drinking Christian Republicans who are supporting the banning of books and other overtly fascist laws, because they really are two sides of a coin in this case, and illustrate the breakdown of social bonds we are currently experiencing.
If you step into the tankie mindset for a moment, you will zoom in on the book banning and anti-trans cudgel that's currently getting swung around, and they will contextualize that with our 400 year history on this continent, and pretty rightly conclude that there is no moral champion at the nation state level, and if there is, it cannot possibly be America, but if they're here, America is the one they are able to fight.
Likewise, if you step into a naive geopolitical viewpoint and say to yourself that Russia is a country that lost the cold war and which the West did not really help to become more democratic in the aftermath - you sent your capitalists and that equated to sending freedom, in the minds of Reaganized America.
But Capital does not concern itself with anyone's freedom but it's own, and Capital does business with anyone willing to do business with it, including its morally-liberated, and now ideologically-liberated, former rivals, who were never fucking communists in the first place; they were the new autocrats, same as the old autocrats, and likewise, Yeltsin was just a drunky thrown up there to give speeches while they reestablished control under the new capitalist branding.
And for thirty years, mostly anyone who question it has been shouted down. "These are our trading partners and they're totally super into freedom, guys! China wants to be like us!"
And here we are. But anyways, rant aside, to the tankie and to the book-banning Christian Fascist alike, the enemy has lost all moral status, they are outlaw, and therefore any measure used against them is just, no matter how inherently unjust it might be in and of itself. As long as it's used against them.
This is how "good" people like you and me end up joining the organizations that end up living in infamy, whether it's my sainted grandmother who went to her grave believing Stalin was fine or whoever ends up as the evil poster boy for the current attempt at Christian Fascism that Barry Goldwater was already warning yall about.
If he had leaned into it like Trump did, he would've brought this all on much sooner, and we would be dealing with some other calamity here in 2023, but Goldwater called it, these people believe in apocalypse as a good thing, so all of us who are right-thinking, whatever economics we may favor, are gonna have to get on the same page about this one.