Flat Feet Runners Can Having Flat Feet Really Make You A Worse Runner?

Can having flat feet really make you a worse runner? - flat feet runners

Haha, I have flat feet and my friend (who does XC, indoor track and regular track) told me that people have flat feet generally can not be run long distances, and people with regularly arched feet. Is that true?
Of course you can not run normally, but I was just curious:)