My understanding is that tankies believe that groups that have partially or completely followed far-left principles should be exempt from all criticism. I disagree. As long as it is honest criticism, it should not only be allowed but encouraged.
I've also heard that tankies are historic revisionists to an extreme. While I agree Western history is not telling us the real version of things, I don't think other countries are either. I won't say that an event happened one way or the other just because country A or country B says so. If historians and other experts are still debating an event and its details, I prefer to watch from a distance as I have no way to contribute to those debates.
So... no.