Oh, for sure... On both counts, actually.

While I don't think the S400s do the Syrian border much good packed up in a warehouse, they don't do any harm (like making high-resolution scans of western aircraft on hardware that Russia may have access to...) either. And I definitely do think that the present Turkish government doesn't do anything unless they figure that they have squeezed as much out of the situation as they can (see also: The Finns and NATO).