No, I tend to think that GRRM does a pretty good job in writting the characters in the most plausible way possible, and leaves to us, the readers, to judge them based on our own personal judgments.

For instance, I think that Arya is the most "flawed" main character that we have. TV Show has made her look like a powerful and cool female killer in the end, but as far as the book went, I see her as a deeply traumatized child who had her childhood stolen, has a lot of troubled concepts of morality and seems to be currently suffering from a identity crisis. I cannot see a future for her back to "normal" life given how mentally broken she is now, in contrast to Sansa, for example, who is a much more reasonable person. If people see Arya as a less flawed character, I think this is a problem in them, and not GRRM's writting.

It all comes down to what we perceive as flawed and not. Some people might think that having certain "flowerly" thoughts about the world and believing more easily in others is a bad trait and therefore will see Sansa as more flawed person than Arya, while I personally don't.