Of course, and any job will expect some degree of training anyway. But there’s only so much that can be tested for before hiring someone. A degree is just a reference from the university that you meet their standards of mastery at whatever major at whatever level. Some jobs expect you to have one just like some expect you to have references from individuals, but others will have other tests for qualification which may even just be an interview conversation. Apprenticeships are pretty similar; each is an individual or group staking their reputation on vouching for your competency. Even a GED or high school diploma is a reference, just from an organization or a public institution.