You may be acting like a teacher, but not a very good one. If your logic says it’s inappropriate to post about a chain restaurant, why is there a section titled "Fast Food Franchises & Non-Roadfood Chains"?
If one of your students was unable to understand such a basic concept, what would your reaction be?
It would seem to me that while there is a section for fast food, franchises and chains, Roadfood is about Roadfood. Thus, for people whose interest is in Roadfood, as defined by the Sterns, it might be a bit unseemly, or at the very least unusual, for a member to be aspiring to own a chain restaurant rather than a one-of-a-kind place with actual Roadfood connotations. I don’t think there is anything wrong with fast food, chains, etc., in their place. I happen to enjoy several, but while I might love the thought of having a terrific restaurant (and with any good luck at all that will never happen) I cannot imagine fantasizing about owning a chain-type establishment.