Yes. They were hamstrung by the fact that they couldn't make any promises that the things that people disliked would get better. With the Scotch referendum, the government at least had the power to offer certain things in return for a No vote. By the EU's nature, it was impossible for any Remain campaigner to say that anything would improve. They were limited to saying things like 'We can transform it from within', which rang utterly hollow to people who'd watched us try and fail to do that very thing for four decades.