Zoro uses his own Swordstyle (Nobody Taught him)
He honed his Haki (He did it himself)
Trains the most in the Strawhats and
Now he's being called Privileged?
I was really never the fan of Parents to kid CoC logic.
Out of all the bigmam kids only Kata had it.
Yamato/Ace and Doflamingo awakened it during childhood. Projecting their kingly ambitions. Not necessarily because their parents are CoC Users.
Only things passed down to Zoro from ryuma is his looks nothing else.
Zoro being powerful because of Ryuma is like saying Hinata is The strongest in Naruto because she is somehow direct descendent of Kaguya herself.