While some have pointed out that this very article could be considered post-hoc data mining, I think it is not. This exact kind of affect was what was intended

While some have pointed out that this very article could be considered post-hoc data mining, I think it is not. This exact kind of affect was what was intended by the requirement to pre-register. Looking afterwards to see if the intended affect (change in how many studies report benefits) appears to have happened in reality, makes perfect sense. They didn't institute the requirement at random, and then later consider that maybe it could have an impact of reducing (perhaps spurious) findings of significant benefit; that was more or less the only reason for doing so.