Coriolis hits the nail!
Yes it's a MAINTENANCE licence. Who the hell cares what type or shape the blade is? Anyway just what is a "modern" helicopter?
I think the original poster should be learning how to pass examinations and not to be confused by facts!
Tell them what they WANT to hear!
After holding licences and various approvals in about 6 different countries they are all the same.
Years ago we used to make a point of not letting pilots of Allison 250 powered helicopters know anything about the engine prior to sitting the Gas Turbine exam. The examination bore no relevance to reality! If they did have some prior knowledge they would inevitably fail the paper!