I'm one of the people who was forced to close bank accounts, and yeah, it was incredibly inconvenient. I wasn't even able to resolve it overseas and had to travel to the UK to resolve it, being left unable to access my funds for months.
I also think Farage is a self-serving dickhead who is turning the molehill of his own self-inflicted inconvenience into a mountain just to rile up his base.
Still, is it really a realistic suggestion that he should be personally championing every cause that has come about as a result of Brexit? Sure, he bears a lot of responsibility for it happening and it's fair to point out that others are suffering in similar ways due to his actions, but his core failings have nothing to do with the fact that he's not championing those people.