Taliban technicals were failures when engaging NATO forces with air support. Larger tactical aircraft can remain at medium altitude (out of MANPAD range) and smash anything that moves with precision munitions.
What does a tank do better than a technical in that situation? AFAIK they don't generally carry better-than-MANPAD AA, they're not heavily armoured enough to resist precision munitions, and they're vastly more expensive.
The situation is a bit different in forested areas. Maybe modern aircraft have thermal imaging good enough to detect heat signatures from out of MANPAD range, dunno.
Technicals can't move through heavily forested areas. Can't drive through a tree. In more lightly forested areas, aircraft targeting pods and radars can pick them up just fine.
