>>29563673Points 1 and 2 are valid but none of that means that she isn't canon. It was explained already in
>>29563633 that what is canon is not Leaf herself but rather the "potential to have been either Red or Leaf".
>>29563682None of that means she's not canon. Learn what the word means. The possibility of being chosen as the player character is what counts as canon. Her name isn't a factor in this argument by the way. Origins and Generations are also canon, yes, but much like FRLG itself, only in terms of their own framework. The word canon doesn't mean "author's favorite", it means what was shown in the source text. And what is shown for FRLG is that either Red or Leaf was the protagonist.
>>29563735As was already explained, what is canon is the possibility of her existence rather than an absolute one way or the other. It is seemingly canon at this point that Red is the one that makes it to Alola though, I will cede that to anyone who attempts to use it as some kind of point.
Y'all need to stop thinking in such black and white terms, canon = what might have been as well as what definitely was.
For another example, there are lots of games with branched/multiple endings. One ending is not canon over another - they are all canon because canon means "what was in the source text".