This functionally puts literally all socialists under the "tankie" banner.

Yup. This reminds me of discussions from a few weeks ago about how liberals are beginning to use "tankie" like how conservatives have been using "woke" ... they've jumped on this new label that they can easily slap onto something they don't like or understand, so that they can protect themselves from having to engage in good faith with anyone to their left or reflect on their own ideas