That's a quote from Corey Doctorow, not Sarah Wynn-Williams. I read her book. She was pretty careful to use your language (i.e., that it was offered, but not implemented, and was China-only data from what she related. Not that that is great either, of course...)

Her main allegations (that Facebook/Meta optimizes for profit at the expense of everything else) seem pretty unsurprising. I mean, given what has been observed, is this in any way controversial?