Yes, on the basis that the government position was that it would be, on balance, better to remain.The first two sentences of the first link say it all: "...The government explicitly states that the leaflet is arguing for the UK remaining in the EU. So it is not attempting to be even-handed..."
QED, JEBUS...
If you factually consider all of your options and then conclude, that in the interests of the country one decision is better, you would be duty bound to advise the population of that position.
For example, if you contested that it would be beneficial for your health to only eat a diet of gammon and I said, no no, it's not the best idea. You might seek to ask a doctor what the best course of action would be and he might say, you will survive eating Gammon, but on balance, the advice I give, is that is you don't as it will be largely detrimental to your health.