If you're worried about security, A less than 10k lines of SOC is your aim. mtm, abduco, dvtm achieve this. screen? Impossible for it to ever be secure. You'll be playing an endless game of whack-a-mole.
lines of code is a measure of complexity in your argument; its better to call it that. Increased complexity, depending on the language, isn't necessarily lines of code, but can have the same effect