On point one; that would earn you a fascist rating not only in Germany.
It's utter stupidity and madness to de-value something first to be able to afford its loss later.
That's a self-deception and predictably leads to extremely stupid, wrong results.
On point two; you're ill-informed about the present RoE and don't seem to value the fact that the North stayed extremely calm in relation to places where ISAF was supporting the Afghan government more violently (for many reasons, of course - but the old RoE were apparently no disaster in this regard).
The job was done so far, several years of time were bought for Karzai and his cronies in the North. More violence would have been of marginal utility. There's no strategic or political failure in sight (even though tactical-focused people agree with you).
Well, point two is really off-topic, so I'll quit on this now.
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