I have not looked at the materials but I suspect most or all Western countries using this toolkit are using it for specific investigations where warrants have been issued.
I personally have no qualms with the FBI planting malware as just another form of surveillance (if they have a warrant to search your home and tap your phone, why shouldn't they be able to get a warrant to monitor your computer?). The problem with Gamma Group, and what I suspect is one of the core reasons for this leak, is that they happily sell their product to extremely oppressive regimes and give them personal support, knowing full well that the tools are being used to spy on and find dissidents, protesters, and political opponents.
I personally have no qualms with the FBI planting malware as just another form of surveillance (if they have a warrant to search your home and tap your phone, why shouldn't they be able to get a warrant to monitor your computer?). The problem with Gamma Group, and what I suspect is one of the core reasons for this leak, is that they happily sell their product to extremely oppressive regimes and give them personal support, knowing full well that the tools are being used to spy on and find dissidents, protesters, and political opponents.