“Farage was arguably the most prominent pro-Brexit voice in Britain. Like Trump, his campaign message was based largely on anti-immigrant xenophobia”
This simply isn’t true Nigel Farage has stated several times that he is all for sensible controlled immigration which is hardly “anti-immigrant xenophobia”
Part of his campaign message (not most of it like you claim) was immigration needs to be controlled sensibly instead of the open door policy we currently have.
Also Nigel Farage wasn’t part of the Vote Leave campaign (the official leave campaigners, Leave.eu and Nigel Farage were running their own campaigns) that pushed the 350 million a week for the NHS he was correct in saying that was a mistake by the Vote Leave campaign