Well, physicists are not necessarily perfect. The article says that "...the group edited 51 existing physics pages, including Speed of Light...", but that particular edit was this one:

Recently, there are some tests<1> on the upper limit of speed of light. The test conducted by Zhang et. al showed that single photon still obeys speed limit which is the speed of light no matter in normal material or fast material. <1>Shanchao Zhang, J. F. Chen, Chang Liu, M. M. T. Loy, G. K. L. Wong, and Shengwang Du, "Optical precursor of a single photon," Phys. Rev. Lett. 106, 243602 (2011).

And yes, it was reverted, with the comment "Poor wording. Perhaps someone with access to the source can cast this into proper English?". (As always with text-only communication, it's possible to read-in some snark, where none is intended). I don't get the impression that this little factoid would have greatly improved the article, but the poor wording would have degraded it.

The correct call I think.

Edit: formatting