Shiva is not demonic, in the religion he stands for fighting demons.
He also fights the "bad" in people, which is usually interpreted as a self-sacrifice.

"Sacrifices" are common in many religions.
Abraham was told to sacrifice his own son, until stopped by a bush.
Even Jesus is seen as a sacrifice (for our sins).

I don't agree with any sacrifice.

I think that a lot of things in religions are related to trickster-spirits. And this may be similar.
These spirits live of suffering, pain and trauma. Especially psychological trauma.
They also give us the feeling that there is nothing to live for.
Or that your self disappears at the end of your life.

And CERN with all their atheists, are probably attracted to the idea that destruction (of matter) creates some purpose in life.
Because they have nothing to live for otherwise.

But I also think that some Hindu or even people with Satanic/atheist ideas will be among them to push for certain art-choices.