As a Remain voter, my impression of Jakswan was that he thought there were other considerations that were as important as economic considerations or more important e.g. not having to get the agreement of other EU members before the UK can put the brakes on immigration to the UK. IME people generally do not make decisions based on economic considerations alone.
Your example is wrong but point is correct. The main reasons were about political union, demographic deficit, ability to create our free trade deals. You are right there were economic considerations and although Davey's credible reports had an agenda which undermined their credibility I still read them and took them into account. After all they all claimed if we left the EU we would still be richer than we are now by 2030.
Davey and others will all say that is not the important claim but it was important to me and my vote.
The Remain arguments that were less hyperbolic were probably a lot more convincing to Leave voters - I have spoken to a few people who changed their minds and voted Remain and they said they did so because they tried to weigh up the actual issues in a less emotional frame of mind and steeled themselves to vote for what they thought was the least bad option.
The Leave arguments that were less hyperbolic were probably a lot more convincing to Remain voters <insert anecdote to support claim here>.
I don't know about other ethnic minority communities but a lot of fairly recent young Sri Lankan immigrants I have spoken, who were employed in offices, banks or in jobs such as driving TFL buses said they voted Leave because they had seen the standard of living in their areas fall. They were pretty pragmatic about being viewed as racist - they were more interested in solving the issue of over-crowding and increased waiting times than worrying about being racist.
Not met meany people who are pragmatic about being viewed as racist, interesting.
It's a more complex issue than economics - e.g. you would think that people would not have a problem with immigrants who were in well-paid jobs and contributing to the economy. Some doctors working in NHS hospitals said immigrants were not the main strain on the NHS - it was the elderly and issues like obesity and Type 2 Diabetes.
Don't really disagree but the strain on the NHS is going to be directly related to the services it offers and the total population, if people are fat, get diabetes and die young they are not going to get old and get dementia.
You can argue that with better healthcare and healthy living that there is a demographic problem but if we have an issue with human population this is a phase we are going to need to go through. Lets say you need 5 people working paying taxes to support one retired and currently we have 4, importing an extra 1 solves the issue for now, but fast forward 30 years you have an extra person retiring..... not sure.