Ooops. Fixed the post. Thanks!
It's up to staff, of course, but from Jaxca's earlier post to me about Gu Zi Cheng in Love in the Shell, even if it is from the actor's official account, they still don't want several similar pics, and the actors are actually supposed to be doing something BtS, like make up or script reading.
Yes, probably some pics on your list are from other actor's accounts, but the uploader didn't source them.