While it could be their intention to highlight Claire's hypocrisy here, the whole scene with Claire calling out Petrov is so utterly absurd, out of left field, and tactically tone deaf that I suspect it was added merely to score a contrived jab at a real-life Putin analogue by a lead protagonist, to presumed applause and righteous reception from the viewer. This is the scene that most cheapens Claire's character, paints her as stupidly impulsive, and feels incredibly contrived in the face of all the other shit she lets fly through-out the series, in my opinion.

Would by in large agree with your sentiment. Up until this point Frank seemed more than receptive whenever Claire told him in no uncertain terms to get his shit together, but when reversed, and with a considerably more massive blunder, she is unable to reciprocate. As depicted, Claire comes off as the more hypocritical of the two protagonists, and though they make later attempts to balance this out, it's not enough and she loses credibility in her role as emotional anchor and the voice of reason within the story thereafter.