College education and certifications don't help too much these days. This was valid 20-30 years ago but not anymore. You can learn a lot online for free. Investing in BTC might be good in the long run. Nobody can give you an exact answer. Only you can decide what's best for you. Good luck!
Lets say you're want to become a doctor specialist, yes you can learn from online and you've mastered many courses, but is there any patient who trust you can cure him when you have nothing to prove if you're a doctor?
i also disagree with your example, you need to take engineering example instead of doctor, because doctory we can not learn online, it is important to practice all operation instrument, and how to do surgery, what kind of patients disabilities seems in real world, think you learned doctory online and never learned to hold an stethoscope, and gone(or appointed) to give an interview in an hospital, they tell you to check any patient by stethoscope and you are not able to hold the stethoscope in proper way and hearing hearbeat first time. (i don't have any experience about doctor and interviews just a my mind thoughts for example) and also patients.
Investing in BTC for long term is good, but if he only know how to grow his wealth and he doesn't have any money, how he can buy Bitcoin?
yes, i have knowledge about growing wealth(not experience) but not have enough money to invest that can transform my life.