IDK. Maybe -- just possibly -- there do exist researchers who have their choice of funding spigots and are choosing to work with Facebook. Either that or HN has some damn high standards for what it means to be "worth their salt".
There's nothing intrinsically wrong with industry collaboration, even when it involves companies whose impact on the world you might not like. The big oil companies are, unlike FB, an actual existential threat to humanity. But I wouldn't fault renewable energy researchers for taking research dollars from those companies.
The question is: will the funded research agendas push science forward in the direction it was headed anyways, or will this money distort the type of research being done?
In any case, in a week we'll be back to our regular programming bemoaning the fall of the industry research lab and the paltry salaries offered to phd students...