"He described Obama's supposed dislike of Britain as being because his father was from Kenya"

Did he Jom?

Here is the BBC's take on it:

"A Churchill bust lent to President George Bush by Tony Blair was removed from the Oval Office along with other art lent to the Bush presidency after Mr Obama's 2009 inauguration "as is common practice at the end of every presidency", the White House said at the time.

A separate bust of Britain's wartime leader, that has been in the White House since the early 1960s, remains on display.

Mr Johnson said in his article: "No-one was sure whether the president had himself been involved in the decision", adding: "Some said it was a snub to Britain. Some said it was a symbol of the part-Kenyan president's ancestral dislike of the British Empire - of which Churchill had been such a fervent defender."

"SOME SAID" - Boris Johnson is merely reported possible reasons GIVEN BY OTHERS to explain the removal of the bust from the Oval Office. At no time at all did Boris Johnson say that HE THOUGH OR BELIEVED that.