No I think you were spot on. I also felt that it wasn't genuine. Jk didn't even pretend to care and kept on eating his food. Sometimes they laugh like here when T*e was crying and look at yn. I think the host was asking if he was okay. And jk laughs too when t*e responds "thank you" and keeps directing the Mic at him. Horrible!
This is it ! This doesn't look like as if they were really concerned about Tae's sadness, they were like " life goes on, come on" we don't know how they really are between them, when there aren't any cameras, but its cruel. But its maybe the possible jealousy and competion between them, I'm sure BH have their favorite, and since they are in a toxic dynamic, others members could be satisfied when one member is sad and cry un front of the camera. Famous people can become very cold to the others, because they are themself treated this way. We never know if they reacted this way because, they are used to stand hard life style, and sadness, or if its because Tae wasn't maybe always nice with his team? There is always two sides in stories like this, even if the final content reveals how its fucked up to be an idol. Can't even be in grief correctly.
With abuse, bulliying but saying its just for fun, the unfairness ( doing on purpose to increase bad behaviors and jealousy between members) it could explain this type of harsh behavior.
Or now I am thinking about something worse than that, on your video this man has red hair. Fucking red hair ! Its means sacrifice. Imagine members were like :" bro don't cry anymore, you know what we are forced to do, to be in place " because they were themselfs aware of what Tae maybe did for his career.
Maybe Tae was regreting what he's done, and realized that he really gave his grandma to his superiors fore more fame, or others horrendous thing. I know that's messed up, but it remind me the case of so much others cebrities. Each time they broke youtube views and internet because of the amount of likes in the same time, you will learn, that close relatives were find murdered, or there was a big accident during concerts, etc..
It's more dark and twist, but what if, the members were in fact just laughing at their team mate to be in high regret ?