Someone's education is a relevant topic when he's a "CEO" of a company that people invest in. It speaks to his experience and knowledge as well as overall ambition. You are not going to find any "real" CEO's with only a highschool education. So this is highly relevant topic.
You've got to be kidding me!
Here's a list of a hundred... and it's not even recent:
http://www.businessinsider.com/top-100-entrepreneurs-who-made-millions-without-a-college-degree-2011-1I mean a few tech titans roll off the head immediately... Gates, Jobs, Woz...
Having an actual college degree only means you stayed at a college and finished your education there. Not having a high-school degree is a completely different story. Again would you like me to post a list of successful people or entrepreneurs WITH degrees? The fact that there are some successful entrepreneurs without college degrees is NOT a valid argument that can be used against the fact that there are far, far, far more with college degrees.