One thing I do ponder: Is a larger share of the Pokemon gaming fandom caring less about Pokemon backstory and more about game mechanics and battling? If this seems to be the case, then I hardly blame GF for going with the majority, although this is thinking out loud and nothing more.
Interesting thought there, especially with some of 6th Gen's new mechanics mainly catering to the competitive battling community such as Super Training, Friend Safari and the changes to breeding mechanics. I do like hearing about backstories myself, so I can understand the feels when a legendary Pokemon's backstory is not explained much, if not at all.