Because people can now locate all the research you're in or that picture of you doing Jenkem that your idiot friend took.
You're acting like this is public.
The FBI is not interested in who your girlfriend is or if you were at a party or if you met Tom Hanks.
Besides, I'm not sure you understand what this is.
It does not literally log every instance of a person's face on the internet 'automagically'. That would be incredibly stupid.