An interesting idea rendered powerless by the fact that David Hockney and his friends act in exactly the affected and pretentious way that anyone doing an impression of a modern artist would. Some moments still manage to work, but far too much of this now seems unintentionally comedic, I'm sorry to say.
Is A BIGGER SPLASH a "documentary" about David Hockney? You'd have to proceed to append so many qualifiers as to effectively bury the designation. There is a major engagement here with tendencies in experimental/underground film, especially out of America. The Anthology Film Archives Universe, if you will. It is also a daring and highly inscrutable metaphysical mystery not unlike a Robbe-Grillet. Utterly captivating.