You mislabeled your graph.
"Bitcoin XT adoption" should be labeled "Bitcoin XT + NotXT + Pseudonode adoption."
Good luck observing RealXT's actual adoption with so many FakeXT nodes feeding you misinformation.
Also, the total FakeXT+RealXT adoption curve has flattened over the last week, as the public became better informed about XT's Tor Blacklist, IP reporting, potential catastrophic consensus failure, and Mike's "Final Call."