Nothing. They make the best Bitcoin hardware. He’s just really into SeedSigner and NVK of coinkite happens to take every opportunity he can to shit all over SeedSigner, not wholly justifiably as far as I’ve gathered. There’s seemingly an ongoing enmity between coinkite and SeedSigner. NVK would tell you that you’re foolish to use a raspberry pi in a hardware wallet. This guy will tell you that NVK is a petty ass hole and coinkite’s products are overpriced shit. It’s a whole thing.