Personally, I don't believe this. Each of us born with a clean slate and the potential to develop into a creative being. You make creative choices every day, and by using a little imagination you can stimulate your own creativity every time you decide what to wear, what to fix for dinner, or how to plant a flower bed. Creativity doesn't pertain only to artists. Either way, there is nothing to prevent an average person from developing creative skills to a high degree.
Art involves mastery of skills, which comes from practice, and knowledge, which comes from study.
Once you have skills and knowledge, you're free to be more spontaneous and creative. Creativity starts in childhood, and if you didn't begin then, it's too late. Unfortunately, there are many impediments to creativity in early life, from parental disapproval to criticism in school. Children are easily discouraged or diverted into other activities. It may be a matter of individual circumstances, where one has to sacrifice creative art for a regular paycheck.