The term "tanky" is actually new to me, and something I had to read up on. If anything, I find the way Lemmy is structured to be very appealing to anarchists, libertarians, communists, and conservatives alike.
It's just my opinion, but the perception of Lemmy is not universal, and seems to be from whatever vantage point people want to take. Rexxitors are valuing the "not run by Spez" and elements of community driven oversight free of investors, people banned from popular subreddits/Reddit itself seem to value the diverse moderators running different nodes, anarchists love being free from any corporate control and the "wild west" mentality of some instances, and conservatives will value any instance with free speech norms.
It's going to really amount to the instances as people learn more about it, rather than the framework itself.