If he got Namikaze, then the village would've known his linage and the enemies would be after him.
Uzumaki was his saving grace.
Perhaps, It is for protect him from Minato's enemies like Iwa.
Hiruzen decided to make him use the last name Uzumaki for his safety,
if he used Namikaze as his last name, the whole NV will know that he's the Fourth's legacy and will target him for sure..
Naruto is not the son Minato?
"Naruto Namikaze" would have sounded a hell of a lot better than Naruto Uzumaki, imo.
Hiruzen decided to make him use the last name Uzumaki for his safety,
if he used Namikaze as his last name, the whole NV will know that he's the Fourth's legacy and will target him for sure..
He is namikaze(more than uzimaki, thats for sure) retard, uzimaki is just a name.
Just like Indra is an Uchia.