Don't worry. It is using a RNG. NotATether did not fully understand the sourcecode and jumped to quick conclusions.
void CudaKeySearchDevice::generateStartingPoints()
{
...
if(!_randomMode) {
exponents.push_back(privKey);
}
for(uint64_t i = !_randomMode ? 1 : 0; i < totalPoints; i++) {
if(_randomMode) {
privKey = secp256k1::getRandomRange(_startExponent, _end);
} else {
privKey = privKey.add(_stride);
}
...
}
...
}