Yes, "tankie" is a word that tells you to immediately stop wasting your time interacting with anyone who uses it unironically.

That's what it is.

Ahh, but if you consult the chart, you will discover that tankies are ackshually far to the right of Biden.

“Tankie” is “authoritarian” left, the construction of which we can thank CIA-funded & promoted bourgeois intellectuals like Hannah Arendt.

One of the centerpieces of the cultural cold war was the Congress for Cultural Freedom (CCF), which was revealed in 1966 to be a CIA front. Hugh Wilford, who has researched the topic extensively, described the CCF as nothing short of one of the largest patrons of art and culture in the history of the world. Established in 1950, it promoted on the international scene the work of collaborationist academics such as Raymond Aron and Hannah Arendt over and against their Marxian rivals, including the likes of Jean-Paul Sartre and Simone de Beauvoir.

https://en.wikipedia.org/wiki/Totalitarianism

This despite unclassified CIA documents to the contrary.
http://archive.today/2023.07.13-193028/https://www.cia.gov/readingroom/docs/CIA-RDP80-00810A006000360009-0.pdf

Even in Stalin's time there was collective leadership. The Western idea of a dictator within the Communist setup is exaggerated. Misunderstandings on that subject are caused by lack of comprehension of the real nature and organization of the Communist power structure. Stalin, although holding wide powers, was merely the captain of a team and it seems obvious that Khrushchev will be the new captain.

A tankie is someone who thinks Stalin was correct in stopping anti-Semitic pogroms in Hungary