Because that's retarded and you're probably functionally retarded for thinking that o top, when the MC's of Legends were designed to look like Lucas/Dawn, thus it was more likely the characters presented in Legends were going to be lookalikes for people living in modern Sinnoh, rather than time-travelling versions of themselves. Doctor Who isn't real and most game developers avoid time-travel as few cunts can wrap their heads around it beyond shit like prince of persia, where you could rewind time (as the MC was the narrator of how he did the events of the game, so when you gameovered, he'd stop and say "wait, that didn't happen" and redux your save point).