jongkookie, pls. knetizens also say that Sulli has mental issues, that their favourite oppa rapist didn't mean it, or that Twice members are lazy in function of how high the jump in the choreo. What knetizens think has zero value whatsoever. And we all know how powerful the edit of a show can be or how clueless some idols are about how to do "comedy". We also don't know how the group is behind the scenes, maybe Seolhyun is actually being a bitch to them? Also, that post is bottom barrel netizenbuzz clickbait post, the number of upvotes of the top comment are laughable.
Seolhyun is also popular because FNC was pushing her to be it. If they had tried to split a bit the atention maybe we would have a Twice/SNSD/Sistar/A-Pink/2NE1 situation, with several members being popular and the group overall being as popular as some of the members by themselves. Now they have a Suzy 2.0/Hyuna 3.0, where the group star is not in good terms with the rest of the group. I see some kind of pattern.
Anyway, we don't know what's going on behind the scenes and probably will never know. But is probably neither black or white and maybe everyone is at fault.