Syag
” are people who are happy the war is over feeling that it justifies the Taliban takeover or are they just stating it as two separate points”
The two are synonymous. It is clear at this point that The war wouldn’t end without a Taliban takeover. If 20 years and billion of dollars couldn’t prop up the Afghanistani govt it is a bit silly to think just a few more years or just a few more billions, we can still turn this around.
So the choices are:
Indefinite war
or
end the war and let the Taliban take over
I think a reasonable argument can be made for both views .
However there is no ending in which the war ends without a Taliban takeover . so the answer to your question “are people who are happy the war is over feeling that it justifies the Taliban takeover” is yes, by definition.