Manudelavega notes, "...for those of us who have been developing in LabVIEW for years, a wire always controls data flow and execution. This is a golden rule that suddenly doesn't apply anymore, and that's quite disturbing I find."
Others have expressed similar concerns in different ways.
But: ​That ship sailed circa 1987 when global variables first became a thing. (A few of us were using uninitialized shift registers even before that.) Dataflow is central to the LabVIEW way of doing things, but purity was sacrificed on the altar of power and functionality at that time.
The real question is whether there's a use case for this particular innovation, and whether this provides a more sensible and LabVIEW-ish way of representing what's going on.
I suspect that if you've done much with queues and suchlike to take advantage of LabVIEW's awesome parallelism capabilities, you'd probably feel it does. I have, and do.