Yup! Yeah this is a complicated topic…but the nature of Shiva and the similar archetype of the religions (Shiva in Christianity is The Holy Spirit), is of a dual nature. When it becomes denser and polarizes it becomes the archetype of Lucifer/Satan…it’s basically the “shadow of God.” The opposite pole of the same nature…and these forces can be used for good or evil, depending on your will.
So who knows what they’re using them for.
Of course, from a non dual perspective, there is no good or evil…it’s just high and low vibrations, matter/density vs. spirit/light, entropy vs negentropy, etc.
But from the normie perspective of good and evil, they could be trying to open a portal to bring in evil entities…or they do simply just want to find out the nature of Creation.