It's when something you consider is unfair happens to make it more difficult to achieve what you want, that you risk becoming livid. I think it is fairly obvious that if the opposite occurs and something you consider unfair makes it more likely you will achieve what you wish, you are unlikely to be livid. Embarrassed and keep a low profile maybe.
Seems to be that, given the public demand for info was genuine, the opposing camps were quite capable of providing that information, at least where it supported their case, for themselves.
There is no valid way of claiming an additional cost to the taxpayer, to word the claims of data, apparently in order to support the 'stay in' point of view, is simply to satisfy that demand. The taxpayer should be reimbursed by those in parliament who are responsible, and they should also supply another £9M to put the data worded in such a way to support the 'get out' camp also. Then the playing field might be levelled.
Never trust governments. They are a bunch wanting their own way and have no regard for the requirements of the public they claim to represent. The public are there simply to pay for everything and been reneged on when understandings are suddenly changed. (As per the pension age, as a prime example.)