Surely these are just seven cliches, trite, or unhelpful phases. I didn't get the impression the list suggests anything that would be a major red flag or an automatic disqualification with anyone except to author.
It just reads like a list of personal pet-peeves. Like if I wrote "things you can't do on the tube/subway", they would be some pretty great rules.
Yes, you seem to be one of the few who isn't offended by joking at how people behave on the NYC subway. The Arabic thing was a dig at the people who irrationally fear Muslims, not Muslims themselves (as if that wasn't obvious.)
Of course, it's always easier to twist and contort statements involving racial stereotypes to paint the person posting them as a racist, than try to actually get the joke, so I expected that to happen.
So, article is titled "Seven Words You Can't Say in Business Development", and the first word you can't use is "You", used in exactly the same context they used it in the title of their own article.
It just reads like a list of personal pet-peeves. Like if I wrote "things you can't do on the tube/subway", they would be some pretty great rules.