I'm saying other OSs are worse for sandboxing.
How would you achieve what you want on MacOS or Windows? (or others?), what do you think goes on behind the scenes?
I would set up a VM if i were that paranoid btw. Qemu, docker, deploy the container to it, vnc or gpu access.
Also, one question for you, since you brought up microphone, how do you defend from Microsoft/Google/Apple deciding to spy on you and access the microphone? (secret court order or who knows why in the future)