The linked article also says the tools they use were changed to limit the amount of resources that could be taken down at a single time, the speed they could be

The linked article also says the tools they use were changed to limit the amount of resources that could be taken down at a single time, the speed they could be taken down at, and a hard floor was put on the number of instances that could be stopped. That's a lot more than just extra training, and a lot better than a two-key system.