Which part are you talking about? Because my comment encompassed the entirety of seasons 7 and 8.
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If you don't like that one, however, we can go with:
-Tyrion is now stupid and disloyal because we say he is
-Jon is now stupid and has no spine until the very end because we say he is
-Sansa is now somehow smart (despite every decision she's made in her entire life being the wrong one) and good leadership material because we say she is
-Cersei now, for the first time in her entire existence, has no back up plan because we say she doesn't
-Bran, whose grand contribution is looking vaguely high the entire final two seasons and opting out of nearly every conversation, is now great leadership material because we say he is. And before anyone tries to say "he has the entire history of the world," let's not forget that he has to view each part of that history piece by piece. And he already screwed it up one of the only times he tried to use it that mattered (he had Jon written off as a bastard from Dorne and was prepared to shatter his brother's entire existence based on a false assumption he'd made. It took Samwell to reveal to him that he'd missed a HUGE portion of the story).
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-Jamie is now incompetent and more interested in fighting others than protecting Cersei because we need a way to write Euron out of the script
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If you don't like that one, however, we can go with:
-Tyrion is now stupid and disloyal because we say he is
-Jon is now stupid and has no spine until the very end because we say he is
-Sansa is now somehow smart (despite every decision she's made in her entire life being the wrong one) and good leadership material because we say she is
-Cersei now, for the first time in her entire existence, has no back up plan because we say she doesn't
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-Jamie is now incompetent and more interested in fighting others than protecting Cersei because we need a way to write Euron out of the script