There are plenty of ways to debug and audit hardware. People have found differences between physical electrical components and their written specifications by using multimeters and by measuring the responses of the physical chip. Chip manufacturers are also constantly checking semiconductor chips for defects. There's no reason why a determined individual couldn't do this themselves. It is also often possible to probe the hardware on the software level. I know of at least one person who found undocumented behavior by measuring CPU response times for different instructions. If you are worried about network communication then there are numerous external devices you can use to measure and test the various network signals that a piece of hardware is sending out.

And yet, despite this, you still claim to know definitively that there is spyware in our devices. I think you aren't careful at all with your statements. I think you know exactly how exhausting it would be for you to actually verify your statements, and that you are way too lazy to check them.

I'm glad you aren't checking your devices for spyware, since that would be a supreme waste of time. But I don't know why you find this topic interesting enough to talk about. Making and engaging with these kinds of hardware claims sounds like a profound mistake, and I don't understand why you do it. Do you just not care?