I'm not kidding

This morning this was my horoscope in one of the local newspapers:

• "If a Billionaire gave you $10 Million to walk down the street every day for a month and scream "I am a total idiot!" would you do it? You're basically doing that now but you're not paid for it. You are worth more"

So how does one interpret these things? Are they saying I'm an idiot but I can get paid to be an idiot? Or are they saying you are too clueless to know you are an idiot? Or are they simply laughing in my face and saying boy are you an idiot?

And another thing who writes these things? and werent they alot less mean in the past?