The Taliban suicide bomber operations have long been fueled largely by brainwashed students from Pakistani religious schools and Afghans convinced, deceived or coerced into carrying out an attack. But in the last few years getting these kids from Pakistan has become more difficult. Finding adult Afghans to fill in, at least competent ones has been very difficult.
A resurgent Taliban wouldn't need to use suicide bombers to fight us.
A resurgent Taliban wouldn't need to recruit children in the absence of adult true believers.
A resurgent Taliban wouldn't screw up the ability to trick little kids into being suicide bombers.
Despite our press corps, one might need to conclude that the Taliban are not "resurgent."