Hello, LaFloresta is no longer with the Apple Data Team so I will be handling this on their behalf.  
I assume you are referring to this way (way/971880007) when you mention that “Street” is not added as a street name. I agree with you, and our team member did not proactively add this name, it was just that it was on the way previously when they split the segment at this node: (node/2687065521).  This created a new way with the same name on it.  I see that you have already deleted the name “Οδός” from the segment, so everything should be good now. Thank you for bringing this up, and do not worry as we will not actively add this name to road segments.