I think the only real way for anyone to get it is to experience it. I thought it was bullshit propaganda too and I also thought I was relatively far left before first arriving at the .ml domain and further lemmygrad. I am still kind of surprised that we have a community out there that large that seems to legitimately identify with the 'tankie' ideology.
It's a bit of a culture shock realizing that you might just be a progressive moderate.