I haven't got seriously stuck into Paul Johnson's Art: A New History yet. Instead I've been dipping. Today I chanced upon his caption for this painting:

Of this Johnson says drily:

Jackson Pollock's White Light (1950s) illustrates the colour theory and practice of Abstract Expressionism. Much thought went into this inspired linoleum.

Could such opinions as this be part of why such disapproval has been expressed about this book?

Pollocks don't all look like lino.