I know people with degrees who have gaping holes in their knowledge.
Remember the old adage "C's get degrees"? You only need to understand 50% of the material (C- grade point average in my country) to get your degree. That's not to mention people cheating or bullshitting their way though their degree. I knew plenty of people at university who were lacking basic skills, but managed to get pulled through by group assignments.
A degree certifies that you've been taught a body of knowledge, not that you've learned a body of knowledge.
Asking self-taught people questions from one domain is exactly the way you won‘t find out if they have skills missing that are necessary.
GT's collective response was always that that wasn't their job. They expected you to pick up {new-js-library} while you were studying.
Their job was to "train you for the last job you'll ever have."
And there's a certain wisdom to that. I can learn a new library -- I'd be unlikely to learn the full networking stack, RDBS internals, the history of hardware / software development, or OS & processor memory handling.
I understand that you are saying any accreditation is better than none. I am just playing devil's advocate with an accreditation alternative to formal education.
Here are the 3 possible curricula for the GT program:
Core: Introduction to Information Security (CS 6035) Information Security Policies and Strategies (PUBP 6725)
Info Security Track: Applied Cryptography (CS 6260) Secure Computer Systems (CS 6238) Network Security (CS 6262) Information Security Lab (CS 6265)
Energy Systems Track: Smart Grids (ECE 8803) Introduction to Cyber-Physical Electric Energy Systems (ECE 8803) Introduction to Cyber-Physical Systems Security (ECE 8803) Computational Aspects of Cyber-Physical Systems (ECE 8803)
Policy Track: Introduction to Information Security (CS 6035) Information Security Policies and Strategies (PUBP 6725) Information and Communications Policy (PUBP 6502) Privacy, Technology, Policy and Law (CS/MGT 6726) Internet and Public Policy (PUBP 6111) Scenario and Path Gaming (INTA 6014) Data Analytics and Security (INTA 8803) Information Policy and Management (PUBP 6501) Challenge of Terrorism in Democratic Societies (INTA 8803 G)
The problem I've seen with "I don't need a degree!" people is gaping holes in their self-taught education, missing things that every degreed person learns.
Yes, I'd trust an OMS from Georgia Tech over "I read some books and here's a good portfolio of personal projects". I'd be seriously concerned that the latter missed stuff any MS in the subject should know.