Farage didn't meet their net worth requirement, which is why his account was closed. A bit like any retail banking product - e.g. HSBC advance, there can be some slack in how strictly the rules are allied. Coutts decided that since he no longer met their net worth requirements, they didn't want to continue to serve him. They may have decided to continue serving other clients whos circumstances changed though for their own reasons.
If farage had met the requirements, none of this would have happened.
That's not what that says. The quote from coutts is even in the HN comment -
> We acknowledge that the information we reported - that Coutts' decision on Mr Farage's account did not involve considerations about his political views - turned out not to be accurate and have apologised to Mr Farage
That does not say that he did meet the net worth requirements. See [0], and read the article. No outlet has retracted the claim that he didn't meet the wealth requirements which is why his account was flagged for review.
If farage had met the requirements, none of this would have happened.