Even if you make the obviously wrong assumption that every library is more secure than the one you would write (that will do less the vast majority of the time)

Even if you make the obviously wrong assumption that every library is more secure than the one you would write (that will do less the vast majority of the time) We still end up in a eggs in one basket situation. You haven't thought through any cyber security games or you are funded to post this bad argument over and over again by state agencies with large 0-day stockpiles.