It takes a long run before you become a pro in cryptocurrency. Time doesn't varies from this because your experience molds you to become a better version of yourself. The more challenges you encounter more; lessons that you could learn and can be apply on future. Life is a continuous learning as saying goes.
in fact all depend on individuals who learn it. where if there are people who want to learn and experience as much as possible related to crypto I don't think it should be for a long time. but if people who are lazy to find information and experience will definitely take a long time, it can even be said that it will not be possible to become a PRO.