Did you really link to material on an ad company's website in order to provide evidence that advertisements are effective? Would you expect anything other than "ads are useful and effective" from an ad company?
More importantly when OP said the slogans were annoying/disgusting, it was a statement of OP's personal opinion. OP never said in general the public finds these slogans disgusting/annoying.
An ad hominem if I have ever seen one! To answer your question though, yes as it gives a simple, researched and concise explanation as to why these are useful and might make the commenter think that they aren't as "meaningless" as they seem.
Disgust includes a "feeling of strong disapproval". I didn't physically throw up reading them, but I did read out a couple aloud in the office and scoffed. They're so smug and grandiose that it's very off-putting and I wish they'd just let the product speak for itself. (I use an iPhone, iPad and MBP.)
Slogans and mottos and such have a long history (to the extent that a lot of them are written in Latin because the practice was common when Latin was a living language) and rarely say much concrete.
Here is a small primer on the psychology of slogans: http://www.adslogans.co.uk/ww/prvwis11.html