There’s been omittance of facts, and certainly no conclusive overview of what Brexit will mean, but that’s because most have a motive - to stay or leave. Even then, it’s so complex that you’re not going to be able to inform the general public to a knowledgable standard.
Personally speaking, I think a lot of people have an issue with immigrants. Yes, some for the wrong reasons, but a lot because of economic migrants. On the whole people don’t have an issue with people coming here to work. It’s those that come to the UK and just leach, claiming benefits and making no contribution to the economy or society.