Why do you dislike Bonnie? She still had plenty of funny moments and roles in early XY before the Zygarde plot, like the Tyrantrum episode, and many funny roles in fillers. She's also the only XY companion to remain relevant since Serena/Clemont switched off between screentime. Personality wise she also had a more entertaining personality than some of the main girls, lol
I've been thinking about the relative lack of screentime Ash's classmates have been getting and I can't help but wonder if there's a certain amount of "We won't be allowed to use these characters after Gen 7 so why bother" going on. Like the writers are getting as sick of the BS as fans are.