We've changed on those things over the last several referendums. We have a referendum commission charged with mobilizing voters and occasionally with disentangling truth from fiction. It doesn't campaign and it no longer puts out a booklet telling you exactly what the referendum is about in fine detail.
There was a time when it put forward the pro argument and it put forward the anti argument, which was rather confusing. Now we leave that to parties and civil society groups, and the one control over that is that no public money is spent. So even if the government puts forward a referendum, it can't spend government money on that.