If they're now blocking clicks from Google, doesn't that mean that they're cloaking and violating the Google's Webmaster Guidelines [1]?
[1]: https://support.google.com/webmasters/answer/66355?hl=en
[1]: https://support.google.com/webmasters/answer/66355?hl=en
https://support.google.com/news/publisher/answer/74288?hl=en
> News-specific tag definitions
> Yes, if access is not open, else should be omitted
> Possible values include "Subscription" or "Registration", describing the accessibility of the article. If the article is accessible to Google News readers without a registration or subscription, this tag should be omitted.
One of these things is going to happen:
(1) They end this "experiment."
(2) They stop serving Google the full content. (And see their rankings drop accordingly.)
(3) They get delisted for cloaking.