Saw an identical claim last night. It wasn’t true then, it isn’t true now.
Insurgencies, like snakes and cockroaches, take a while to die.
They may take a while to be completely killed off, but a fast & violent counter-assault can go a long way. You deal with a snake & cockroach infestation by killing every one you see, poisoning the ones you can’t, ignoring the fact the process will be messy, and then cleaning the place up & patching holes ASAP; fearing & negotiating with them doesn’t work.