Don't get me wrong I'm not trying to state that there's a homogenous insurgency in Afgh. It's that the taliban is markedly different from most other groups as it doesn't (to my knowledge) serve the interest of one tribe over the other.
Anyway, the point of the post which I originally quoted (which you quoted):
Superior_Mind wrote:
If the Taliban is a Pashtun nationalist movement then they would mean to remain as an entity with presence in Afghanistan whether or not the US is there.
was that, were the situation in Afghanistan that of fighting an insurgency (which it is), trying to kill everyone won't work. Admittedly it was clumsy to lump everything together and use 'the Taliban' as an umbrella term for the various insurgencies, though that is oftenly done especially in the media. I just continued in the trend of the quote.