[Quick Aside, as mentioned below, take things I say with a grain of salt. I’m no expert in linguistics.... But I have a degree in PoliSci and History... and I’m in Law School, so the cynicism is beginning to brew...]
News Flash: Mangakas don’t always do the most research into everything they make.... nor do animators. I mean..... look at Toriyama..... No.... seriously, look at Fucking Toriyama..... or how about Araki.... that’s the real MVP....
Also trending: Grass is green, Trump: Still President [Sorry, Law Student humor]
[I personally don’t want to stop others from using the names they choose to use based on the version of whatever they had. Just jumping in to stand by the mangaka.... because people often times forget about them in talking about their media. We can’t see into their minds, but I’d like to hope Takahashi did some research when he made his plots about Ancient Egypt...]