If you make something more expensive, people do it less. If you make engaging with the government more expensive, it's not different. Imposing costs on group members who are not themselves the perpetrators will do that. Creating a system that can ruin the accused even if they're innocent motivates people to circle the wagons.

This isn't an argument that the way people respond is normatively good. But the way people respond is what actually happens, so if that's not what you wanted, you need a different system that doesn't cause people to resist its mechanism because the system itself indiscriminately damages friendlies.