Why real experts do not brag about how great they are?

This is not a real article, not even a newsletter. I am just worried about the prevailing arrogance of would-be-wanna-be experts who claim excellence in areas they have just scratched the surface of. 30-year-olds declaring themselves "life-coaches"... 2-month interns in financial institutions claiming experience in "tons of projects" under their belts, although they just helped arrange the documentation. Did Albert Einstein ever said about himself that he was a genius?

Tell me - what do you make out of this?