Informed consent matters.
You CAN reasonably expect when walking into a Walmart to shop that they have security cameras.
You CANNOT reasonably expect that your children are being filmed by a YouTuber and what is done with that footage.
He broke the law. He even admits it.
The word "trillionaire" will now enter our collective everyday lexicon, while more and more people will starve, dying in ways most undignified. This is capitalism winning.