After everything I have now seen, from the backstage insult, to the guy punching Chaeyeon, to other abuses, I honestly believe that they specifically targeted Chaeyeon and there is probably much more that they did to her.
I mean, why would they just say those vile words to her, hit and verbally abuse her if she wasn't a target?
Whether it's if she's an easy target or just a target that they chose, I dunno, but if I were to guess, she's also not the only specific target and have had other certain targets in the past.
I hope they are thoroughly investigated.