, I am not sure which point you were referring to when you used "that", however I do agree with your points. Open source projects, such as Linux or new cryptography schemes, do earn a reputation as more secure because of their peer-reviewed nature. Security through obscurity really only provides a false sense of security. +Emlyn O'Regan
, laziness permeates most any profession, so to say that security concerns are not introduced from this is probably a bit of denial - I am not trying to say this is a big problem, just that it happens. It is probably worth noting that a large percentage of the larger "hacks" have not been because of the coders themselves but from the system admins not applying provided patches (leaving their networks open to exploitation).