Certificates are proof that you have undergone a test on what you know on the subject and the issuer should be credible enough to back you up on your knowledge about the subject, like you never know someone you met until you see the certificates that he received.
There will be a lot of jobs and professions that will include knowledge about Bitcoin and Cryptocurrency and you will need something like this to back you up if you're a company and you're going to hire someone you want to see as many courses your applicant has gone through that is related to the job applying, so is when you're an applicant.
In the future, we will have Universities offering this kind of course, there's a lot of demand in many sectors where knowledge of Cryptocurrency and blockchain is essential.