Argh. I used to work a lot in open data, including a stint within the open data department of a major city government. This kind of behaviour does nothing to advance the cause. It just perpetuates the belief that open data and FOI are massive waste of time and resources and open legal risks for no good reason. I'm also pretty surprised that people think email metadata from government is legitimate open data. Do you t…
My go-to phrase for open data is, "open data is a lie". Because at the end of the day, we have zero legal recourse to validate that what is provided through open datasets is complete, both in terms of available columns and available rows. Very rarely will it ever be explained why, or even if, information is missing. And the subsequent effects of that lead to a deep public misunderstanding of what's going on. And much of it is intentional out of explicit fear that the public will misinterpret the data. So we go through FOIA instead and we end up going through legal battles. There's a reason I've had to do ~10 FOIA suits.
tl;dr: open data is nice, but its lack of rigor and accountability makes it effectively useless for anything that requires depth.