Mostly everyone has eyes in naruto. Some with special abilities Mandar,kakashi,pain etc...
Some few Tobi some many Danzo. Some that looks like your using the bathroom Neji.
So with that where are the special people using their ears. Last time we seen someone using their ears were in Naruto a the start and the person you see mostly using the nose is Kiba and out of all the people who uses their mouth is Oro always sticking his tongue out.
Where is the hidden ear ability
Where is the hidden taste ability (do not eat that Naruto that is poison let me taste it before you(come on butterfly Choji should a least have this.)
Where is the hidden mucus or nose sniffing ability ( this smells like danger lets not fight lets head back ability we stand no chance (medical jutsu for the folder characters who has no wins expect for killing woman and kids and white naked zetsu )
Bias? Does Masashi Kishimoto have 20/20 vision and he just wants us to know?