Actually, engineers don't take personal responsibility for their work. Craftspeople do.
Engineers are licensed because they're aware of their field's engineering principles. In effect, they're abdicating the responsibility for performance to the principle, not to their professional reputation.
Craftspeople on the other hand rely on their personal reputation and know their standing in the industry relies on their past work. So they make sure anything attached to their name reflects who they are, what they stand for, etc.
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Actually, engineers don't take personal responsibility for their work. Craftspeople do.
Engineers are licensed because they're aware of their field's engineering principles. In effect, they're abdicating the responsibility for performance to the principle, not to their professional reputation.
Craftspeople on the other hand rely on their personal reputation and know their standing in the industry relies on their past work. So they make sure anything attached to their name reflects who they are, what they stand for, etc.