I've been down this rabbit trail... I didn't trust the hardware manufacturer because wireless (cell/wifi/bt), right? So the simpler the device the less attack surface? What about the FM radio? etc, etc, etc... Why not do it manually with paper wallets? I finally bit the bullet and bought a hardware wallet that supports QR codes...

Now, I'm all worried about trusting the software and verifying the content of those QR codes! LOL...