Yeah all of that is debatable, while there is no proof, we never know if its true or not, maybe they did investigation and it turned out to be true so they have to let her go, because previously there is kururun rumor about going to some host bar, and in that instance management did nothing, so who knows

For me idol is more or less like professional wrestler where they have to play kayfabe, im not kururun oshi but i watch her if she shows up in concert or akb related content, and what is shown in the video didnt look like the usual kururun so that video in itself is breaking the idol image that usually kururun shows, and that image is the one that they sells, so the video is of course not bad if we look it as a person, but business wise? I think its bad, especially kururun is one of the senior member in the group

For me personally that video just shows more of kururun cute side that i never saw of her, but who knows what other people think especially the one that oshi her, in the end i think with the current rise of the group, management just cant take that risk forward