There is no depth or ulterior meaning behind it at all and makes me think of a Russian every time he screams, regardless of somehow being "ancient/egyptian" whatever.
All you're doing is making the lore-geeks start pulling at straws on what it means.
FACE IT. IT DOESN'T WORK. FIX IT.
Thanks.
I think it works.
When does any accent have any deeper meaning?
I mean 
has a french accent for no reason.
I think you havent heard all the voice lines( go to wiki in order to hear them)...also a lot of people love the new vo ( me included)
To do that, they would have to re-record his entire VO. And he's weeks from launch.
They won't do that.
Yes, because the accent part of a charcter always serves as depth or as an ulterior meaning to the the charcter, not simply to distinguish him from other champs of the same kind. And it isn't confirmed yet that he is from Shurima, only that he served Shurima against the Void, so...
What accent should he have?
