News sites have long pushed for regulations that would require companies like Google and Facebook to pay for excerpting and linking news articles, so part of me wonders if this is an intentional policy to avoid being held liable for paying, in turn, their sources of information should those regulations ever come to pass. Deeply funny to me, honestly.
I think Guywithabike is saying that phys.org doesn't want to have to pay Greenpeace for citing them, should that future come to pass of Google paying news sources for snippets.