I don't think there's enough evidence to say that we necessarily couldn't crush those insurgencies with drones. As far as I can tell, the US has (reasonably, humanely)[1] pulled its punches considerably over the last fifteen years.
[1] to the extent that any war can have these descriptors slapped on them. War is hell, The US has done inhumane stuff, I don't think they did as much as for example I think they did in Vietnam.