1. Believe them. Use their products and benefit from them.
2. Disbelieve them. Refuse to use their products. Miss out on benefiting from them.
I pick option 1. I think that's the better option to pick if you want to be able to benefit from what this technology can do for you.
Personally I think "these people are lying about everything" is a stronger indication of a cult mindset. Not everyone is your enemy.
Fool me twice, you can't get fooled again.