No it isnt. The fact that Luffy didnt know doenst mean it is advanced when Boa sisters already had it. The OP of the thread is wrong just as basically most lf the users.
I can agree Kizaru has it, but it call it advanced?? Mmm nope
I can agree Kizaru has it, but it call it advanced?? Mmm nope
Boa's sister had it, but that does not mean it is not advanced when, idk, King or Marco do not. Kujas are world-famous for their haki, explicitly said. Boa sisters were also adoptive daughters of a certain Rayleigh, so no wonder they have it.
But anyway, points of view.