All these PUA techniques are a waste of time even when they work (and they do most of the time, but never as well as advertised btw). Changing your voice and personality just to please some random chick seems a great idea.
The only way it would be worth it is if men would really find pleasure in applying the 168 rules of seduction detailed on this site and others (but I suspect that 99% of men would rather play videos games than making fools of themselves on tinder and in bars).
As a married man, I'll give you a heads up: Good luck on keeping up your game for 15-30 years until she hits the wall and she becomes loyal. She will take you to the cleaners if she wants to do it no matter what. Most bad boys end up divorced and paying child support, remember that.