Maybe it was the case few years ago, but now the rework equipment is quite affordable. It is certainly within hobbyist reach now to e.g replace BGA chip. That's

Maybe it was the case few years ago, but now the rework equipment is quite affordable. It is certainly within hobbyist reach now to e.g replace BGA chip. That's why they rather go into "security" excuse as this sort of stuff cannot be easily bypassed.