Not all proprietary software currently insists that you get into a TPM-mediated Dom/sub relationship with its developers. Its currently possible, and might be ethically necessary, not to buy those ones, and instead to buy the other ones.

But it's also probably important to pursue a political avenue as well. The government should absolutely not be using this stuff, and shouldn't be advising citizens to do it to access government services. We could even pass a law requiring purchased hardware and software to meet a fiduciary standard towards its users.