New Judge
You say that I have not substantiated my opinons, but all you talk about is yourself and the people around you. If that's what substantiation means, then I can do that too. I know of six people in my family who voted to leave (there are probably more but it never came up). Of those, five voted to leave because they want less - or in some cases zero - immigration. The last one voted leave because she didn't trust David Cameron and wanted to do the opposite of what he told her. Outside of family, I know a few more Brexiters directly - the majority voted because of immigration. One I know voted to leave because he thought it would benefit his company and did not think "hard brexit" would happen - he changed his mind when he realised that a norway-style brexit was not going to happen and seems to really regret his vote.
"So I'll ask again, how does being worried about immigration equate to disliking foreigners"
The majority of people who euphemistically talk about "having concerns" or "being worried" are usually people who straight up dislike immigrants. The same people usually use lump-of-labour illogic to talk about immigrants "stealing jobs" or bristle at other people speaking other languages when they aren't talking to them. But it's all the same thing.
Obviously such people are entitled to their opinions, but it is wrong to insist that Brexit had nothing to do with immigration - it was for the vast majority a vote on little else. People talk about Brexiters sometimes like they are riddles wrapped inside enigmas. They aren't. The majority did not care about fictional bendy banana rules or byzantine legal entanglements - most people were indifferent before 2015. If you are among the ones who did care before then, the fact is that you were in a minority. For the vast majority of people who voted leave it was all about immigration.