This comment by Arnold has been criticized by others, I quote from a book review:book review:
Prof. Arnold is extremely passionate in expressing his philosophical ideas on mathematics and returns to these themes repeatedly throughout the book. Sympathetic as we might be to some of his points of view, we do not find it constructive to take extreme positions such as the ones advocated by Prof. Arnold. As an example, perhaps it is time to re-evaluate our own perceptions about Hardy's contribution. He considered himself a pure mathematician with seemingly no interest in applications. But much of his work in analysis even at the time was applicable, and the Hardy-Weinberg test is still used in counting red blood cells, of which Hardy himself was aware.
Hardy's efforts to bring rigor to mathematics in Britain are viewed positively, see the discussion at Unrigorous British mathematics prior to G.H. Hardy