Through some advanced mathematics LBC is able to check this list of several million addresses
Advanced mathematics?!... WOW... Its more like advanced stupidity!
I find the whole thing to be pretty awesome. What are you afraid of? they might stumble upon your private key, or expose a vulnerability in the system? If so, then that's the way it was meant to be, and the next iteration of bitcoin will need to step up their game in terms of key generation and security.... "Quantum-resistant" I believe the term is.
No, that's not the term, "Quantum-resistant" means resistant to quantum computers, which Bitcoin is not. That's not the problem because there are no functional full-capacity quantum computers yet. There are some prototypes, but none delivered what's promised.