You're perfectly entitled to believe what you want, was just trying to help you correctly identify the former Hobba system structure (re: who was paid, who was not). I'm sure if you were to ask one of them what they put on their CV it would be the title Community Manager, as that's what they were known as to us within Sulake.
http://www.habbosphere.com/history/3-habbo-staff this article correctly identifies the original, typical base structure for staffing.
Whether or not the term "Head Hobba" was an official term or not does not change the facts around Hobbas as paid staff which I think is the point you're trying to make? Or not?
edit: sweet jesus, the recruitment post even uses the title COMMUNITY MANAGER, Head Hobba is an informal reference to an in-game player coined term! With reference to this, I would know a lot about Sulake's inner workings, trust me.