You could get yourself a RF analyzer or an old Hammy (Ham radio enthusiast would likely have something you could borrow)and find out what they are using then that would allow you to figure out your options such as removing the antenna, sim card, or the module in some manner. The problem with removing modules could be they are tied into the cars electronic controller which could cause issues with the car even working.
You make it sound like these people have a bone in their bodies to take the fight to their government… all a bunch of hot air. Even the ex military ain’t got it in them. Not many people are willing to sacrifice their lives for their ideals.
Reolink is a Chinese company. Not known for their privacy. My experience with their cameras is the quality is meh and their software is even more meh. It amazes me how often they get recommended. I guess it’s due to their cheapness.
You don’t really own a console. Just look what happened to Sony owners and the content they paid hard earned money for on their consoles. Microsoft and Nintendo are not outliers here. The PCMR “weirdness” the guy above was complaining about is also not walled off from this bullshit. Thanks to Microsoft.
However PCs have a solid chance with gaming becoming more and more embraced by the Linux community.