From: i luffs yeww
Not true. I'd say it's a similar situation as encryption methods.. There's a reason that using the most known encryption methods are almost always a better idea than using your own encryption method..
A public script takes criticism and people can give ideas as to how to make it even less detectable. A private script doesn't have these advantages, and, therefore, can typically be more detectable than the most widely known scripts.
I can agree with that, but only to a certain degree. There are alot of factors that can come into play; such as scripting ability, methods used, the situation being coded for, and others I cannot think of ;)
But I think to say that using the generic version makes you less generic (in all cases) is very… well, incorrect.