When I look at Shinee I don't get evil vibes per say, but I see such sadness in their eyes...I do think they're probably mk victims and have satanic alters for rituals and others for dancing/music vids. Just watching interviews and talk shows not sure what to think of them. It's almost like they have no idea about what they do during those clips, but then that's the idea of alters...to keep some stuff and memories away from the other alters because MPD/DID is actually a coping mechanism so that the person can still function "normally" when the alters aren't being triggered (in this case, the alters are created on purpose for MK ultra through horrific trauma programming so they split).
However, some people with MPD are aware that they have alternate personalities, but don't have access to the memories at the same time or know much of them, so could be the same with Shinee members like Taemin--go check out the "Goblin" vid by SM artist Sulli who was probably killed, she speaks of her alters and the video even explains that it's about someone with DID/MPD.
Though in the video she's aware of the other people inside her, she's confused by them and says she "just wants them to go away", though by the end she says she understands them...I think she's saying she understands how they came to be and feels bad for herself/them. Goblin #3 is very clearly a satanic alter and I think that the people following her everywhere are her handlers. I hope her troubles are over now. She had been in the industry since she was very little.
Come to think of it, maybe Sulli was trying to reach out for help, if she was involved in directing this? Sometimes I think that they're trying to tell people. I was surprised that SM put this out tbh. Even in Taemin's criminal vid, it looks like he's showing people abuse he went through (being tied up, suffocation, ect...). So I don't judge these people, just feel very sad for all in this business because they serve Satan, not God. When you serve Satan it all adds up (well they probably would call themselves Luciferians and not Satanists, since they have an inaccurate view of him...and I suspect Taemin and maybe Sulli were raised into this as well).
/Sorry that my posts are so long but this issue is so complex and we have to dig through the layers of symbolism and also ask God for proper discernment as well