His metier is either a carefully curated appearance - and we can bet he gets the questions in advance.
Or a shouty clip where there is really only bandwidth for a single question and a single answer.
Also he is pretty much at the Farage event horizon now. Basically all the people who are going to support reform because of him are already supporters of reform because of him. There is no hidden mass who are undecided on the Farage factor.
He also now has to manage the big beasts he is sucking off in. I can't see Jenrick or Zahawi being shrinking violets content to toil in the shadows in the cause of Nigel.
For whatever reason - call it destiny ? - the UKs election cycles are out of step with Nigels needs.