Your link says to take two steps. 1) Come to this very forum. Which OP obviously did. 2) Make a post about the ad with the site it links to. In this case, Best Buy. Done! Aside from you posting the same link and screenshots of that link telling OP to do literally what he's already done, what value have you contributed to this thread?
My contribution was both a +1 to disliking this ad, as well as info on an additional problem it causes, that it steals the audio channel in iOS, halting any background music that's playing.
I fully understand that MacRumors doesn't directly select the ads. But it's their website. They're still accountable. They selected the service, and they're impacted by those ads. If the ads started blasting porn would you stand by and say that's not MacRumors's fault or problem to address? Of course not. That's nonsense.