I am currently working through it to adapt it to my needs.
Under "Cookies used by our service providers" you mention that Google Analytics and AdSense cookies are set. My question is: wpForo doesn't add these services by default, right? Did you add this part to cover the common case of people using GA and AdSense?
Yes, wpForo doesn't add these services by default, this is just a template for cover as much cases as possible. In most cases this is true, because almost all websites use GA and AdSense. So the answer this is just a part to cover the common cases.