By the fact that Janeway is alive again and a recent event in the new Mack trilogy giving the impression that the reset button is still in effect.
That is the nature of tie-ins.
In the Arnold era, the sandbox was expected to be fully restored by the end of each book.
I can't see the current novels resetting the Riker and Picard babies, nor Captain Dax. If the Typhon Pact "falls" in "The Fall", that won't necessarily be an Arnold-type reset either, just the next arc in an ongoing saga.