Who is Louis Ganderax from How Proust Can Change Your Life ; Not a Novel and what is their importance?

Ganderax was the self-described "defender of the French language," an editor who wrote a comically pretentious and overwrought ode to composer Georges Bizet. Proust wrote a letter to Bizet's widow, ridiculing Ganderax for his excessive reliance on cliches and tired phrases.