>>44124471Because she's the fan favorite and the only Champion who felt big time in both the games and anime.
Lance is a designated jobber in the games and anime. Steven lost to Wallace in the games, he at some point beat Wallace in the anime to become Champion, but he never did to much in the games. Cynthia was a big part of the DP games and anime and has a cool team/is a total babe which adds to her being favored. Alder was shit. Iris was in the anime as a shitter so she's out of luck. Diantha had no role in the games and during the anime Ash managed to push her back into a corner. Alola had no champion.
