MathUser said:

It's prettty stupid, he saved him so he's at the point before he became evil right? That's why he gots normal color for his skin and normal body parts? But for some reason he's aged. Did Luke somehow create an alternate timeline or something?

Oh yes, of course, we all remember the embarrassing obviousness of this mistake from 1983 to 2004. For over 20 years, it was all anyone could talk about, dominating all Star Wars conversations, because it was just SO clear that a huge mistake had been made. And, then finally, our long nightmare was over and it was corrected.