why do they want delta neutral, if you are buying option don't you want delta as high as possible and if you are selling option don't you want delta as low as possible ?
I think the GP misspoke when they said "option traders". Market makers want to be delta-neutral -- they don't want to care whether the underlying goes up or down, since they buy and sell both puts and calls and profit from the bid/ask spread.
Your description is right(-ish) for directional traders.
Your description is right(-ish) for directional traders.