It doesn't work that way.
I honestly don't know why you are blabbering about some secret government agencies, unless you had a very boring day 
If you are using closed source devices and wallets than you can speculate about this things much more.
How do you know that UTXOs and all its history are already not being checked, compared, exchanged, and stored in some databases somewhere to be used for who knows what? There isn't going to be proof for that and open-source or closed-source doesn't matter one bit for that to be the case.
Code is open source and haters would be first to expose this and report it everywhere.Maybe ask owners od closed source wallets if they doing that with their secret signed NDA's and privacy policy third parties.
I still didn't hear a single case in the whole world that people complained about blacklisted transaction using wasabi, when I hear it I will be the first to report it.
Till then I leave you to write fantasy fbiciami6 stories
