Most of the article talks about harassment complaints. The few parts that hint at non-disparagement clauses seeing more general use are immediately followed by tie-ins to... guess what, harassment complaints. Like the quote in the gp comment.
There's no hint at what else might be getting buried, no hint that there even could be other things getting buried, and certainly no attempt to quantify what's getting buried.
There's just implicit assumptions, of the sort that are easy to not notice and so just blindly accept, tying these agreements to, and so reinforcing, the current hotbutton issue.
I don't like things that favor feedback loops over (attempts to gather) data.
THat's like saying an article about french fries neglects the non-fries uses of potatoes.
Potatoes are more than just a side item for hamburgers dammit! ;)
I don't understand how the second quote is related to the first except in the case of the discrimination settlements.