I don't think you have a sense of the shear weight of the assets we held in kandahar, at various locations, and the kind of labour required to remove them. Yes, we left kandahar, but people have to get our shit back, unless you'd rather leave it for another country to enjoy?
If you really want to get technical, we haven't left a combat role because the 500ish soldiers now in kabul training the ANA will, in moments, face conflict. But, as for our men and women in KAF and the region's FOBs, we're done.