As a westerner is it right for me to have a Sak Yant done?

Yes of course as long as you believe it will help you in life and you only use the powers for good and not evil.

I have read some stupid remarks from western people that it is exploiting Asian culture. Do I have the right to wear pants, drive a car, sing opera or enjoy a bases ball game what is more western than these thongs I am not exploiting the western culture but improving my life through it.