The question is though, do we really need more information if we don't do much with it? All throughout history very wise men called for animal rights and spoke against cruelty.
The same arguments. Whether it's Voltaire, Pythagoras or The Dalai Lama.
As long as cruelty is masked by language (hamburger instead of dead cow for example), distance (out of sight), marketing (pretty images of happy animals), social distance (poor immigrants that don't mingle doing the dirty work), no amount of information is going to make a difference.
We have to see it, to feel it, to live it in order to do something. You say it's becoming increasingly accessible... Most people do know I think.
But it's simply too abstract for most.