No, i meant ninjas are still there but the "Age of Sages" is now coming! (english is not my native tongue sorry if i made some mistakes) maybe after shippuden the next title of naruto is "Naruto Sages Chronicles LOL.
I actually thought of this before This is a good idea! Tell Kishimoto sama LOL
or
Maybe after this fourth shinobi world war Ninjas will now be replaced by Sages! i mean there is Toad and Snake sages! so no more Shinobi only Sages!