[HarHarVeryFunny]

What's so bad about a "generic" resume? I assume this means one that just honestly describes your experience rather than tailoring it to the job applied for to make it seem you're a better fit than you really are. It's up to the person (hopefully) reading your resume to decide whether you're enough of a potential fit to take to the next step (technical screening call?).

[jdhdbdbdn]

A cover layer is there to show how you fit the role. This cannot be done with a genetic cover layer

Telling facts about yourself is done in the CV, not cover layer

[HarHarVeryFunny]

Sure, but the parent was talking about customized resumes, not cover letters. The cover letter of course needs to be customized, else it serves no purpose.