But seriously folks... I think the intended meaning of that passage is: "Generally (any) Perl (script) that you write yourself is a lot more secure than a C program that you write yourself.

The point being, of course, that the implementation of the Perl interpreter in C is molded/guided/governed/guarded by an elite team of uber-coders who answer (promptly and directly) to a large community of very meticulous programmers.