My devices all connect to a wifi router at home that I bought and configured myself, which bridges to my ISP's modem. Has it been hacked...? Well, I hope not. I do the best I can. My laptops have all been ThinkPads running Linux, for years. I love the maintainability, and the fact that I can turn off wifi with a physical switch is a nice bonus. I'd like to try out a Purism laptop someday, if I can ever afford it.
I take comfort in the fact that nobody really cares what I am doing and I am not worth the effort of a focused attack. If I ever got involved in politics or activism, I might manage my risks differently. It is frustrating for me that the world continues to drift further away from the way I'd prefer it to be, in this arena, but my desires are extreme, so I suppose that's to be expected.
But what's the definition of "other peoples' machines?"
If you run Windows 10, it's not really your machine. You don't have full control over it, do you? It updates and reboots when Microsoft tells it to, not when you tell it to.
If you use a smartphone, that's not your machine, either. If you can't read and write every byte of storage from the baseband processor to the video chipset, but the company who sold you the phone can, then that means it's their machine, and not yours.
If you use a Linux box or a Mac, I hope you never plug an Ethernet cable into it, because that effectively turns your machine into a dumb terminal on a system that isn't yours, just as the Oracle (Corporation) foretold.
"Keeping it to yourself" gets a little less practical every year, it seems.