With all that info – which seems miscellaneous when considered individually – they can do predictive analytics. Not only on you personally but on the ENTIRE SOCIETY. They can assess which manipulative measures are working, and on whom. Which measures have failed, and alter their approach to make it more effective. That feedback measurement is a marketer's dream, but it's also a satanist's dream. To control people so that people don't even realize to what extent they are controlled.
Ultimately, to control SOCIETY through advertising, media, fake news, fake products (that you don't need), to slant your point of view.
To Direct the Course of Human History and to take away all vestiges of free will.
If humans don't have free will then how can they make right choices?
God gave us free will.
Satanists take away that free will.