>>50759368>>50759138the storylines of xy (including serenas crush) have been under question due to recent actions that have happened in JN
while serena had a crush in xy, in JN there is really no evidence to show that it ever happen
(retcon) for example, if you skipped xy and only watched JN you would never think that serena has or had a crush at all it is most likely retconned from the series considering only 1 or 2 eps later AG(Ash greninja) was removed from flashbacks.
in addition to this Piplup has been getting more and more merch and looks to have been moved to the "mascot tier" for pokemon with Pikachu and Eevee project Piplup looks like it will be continued as project Eevee did