The corporation's
minimum burden is to follow the law and abide by court orders.
That doesn't mean a corporation should be exempt from criticism when it does the wrong thing despite fulfilling that minimum burden. Laws are inadequate, and have loopholes.
Example: A corporation could literally make it its mission to funnel all profits into buying dirty coal and burning it for no reason whatsoever. There's nothing illegal about this in many countries.
"They should immediately act on takedown notices, for example in the case of revenge porn, but are not a private replacement for law enforcement."
They don't immediately act on such notices. That's part of the problem. They've pushed their customer service division onto the taxpayers of rich countries. And they've outright screwed the people on poor countries (Myanmar?) that have no recourse.