My first blush reaction is: thought provoking. I think it is a natural human response to engage in contrary behavior: we hold "us" to both higher standards and lower ones, depending on the context. No prophet is with honor in his own town, no great person is great in his valet's eyes. But we also tend to give "our folks" the benefit of the doubt and assume that, when they conflict with "them", they are in the right. I like the way you've mapped this split onto leftism, but I wonder if it doesn't apply more broadly. We hold our children to higher standards than their guests in our homes, yet defend them against criticism by outsiders.
If you could go back to the planet that you came from and not have to be a dispassionate observer any more, what would you do? Be native (as opposed to going native)? Just live an unreflective life immersed unquestioningly in your folkways?
Sounds very pleasant. Sure beats having to eternally fight liberals in defense of everything good.
Thank you for the thoughts.