Its marked as a 5wt. rod, because for its intended purpose it uses a 5wt. line.I don't know about all day long - it's a competition rod - but, yes, that's what it's designed to do. And if it wasn't marked #5 there would be no issue at all.
It is becoming quite the circular debate.
But at least you understand now, why this is not a rod you personally, should buy, because you have read about it and decided you don't need to make consistantly long casts, and subsequently feel a take at distance, or positively set a hook at distance. This is a rod for doing that, with a 5wt. line.
I think a beginner, or average angler by your measuring stick as a point of reference, would recognise that a 5wt. Technical Casting Rod is either not for them, or is something they perhaps might get, to grow into?