They probably meant that the reason is malicious, to spy on traffic. Especially since a good chunk of the top sites on that list are Chinese which is known to have generalised spying on internet users.
However, in a shitty regime like China, surely the government can ask the websites to just hand over the private keys and disable prefect forward secrecy, allowing government spying while preventing anyone else from doing so.
Which is insanely difficult to do at scale and would take a considerable amount of time and resources. Not to mention being really obvious! I'm happy with making things crazy hard for the bad actors out there.
