You have obviously never read the requirements.
There is a tad more than "some theory" required.
Required Classroom for the Gold Master Diver Program:
1. Advanced dive tables and decompression planning.
2. Accident management.
3. Physics theory.
4. Diving physiology theory
5. Equipment mechanics.
6. Medical aspects.
7. Environmental awareness.
Prerequisites include Silver Advanced certification or equivalent (only the LA County Advanced Diver Program would qualify as equivalent)
Silver Advanced required classroom includes Equipment Maintenance, navigation, night, limited visibility, deep, boating safety, environment and a CPR rating is required. 10 dives are required for Silver Advanced, not 5. There are several required skills in open water including making an entry without a mask and donning it underwater. The mask must be removed and replaced again between 50 and 80 feet of depth.
To complete the Gold Master Diver course, the student must be certified SLAM (SCUBA Lifesaving and Accident Management), First Aid, CPR, and O2 provider.
The 10 required dives include at least 2 dives to 100 ft, two while wearing either a wet suit or a dry suit, 2 night or limited vis (0 - 2 ft) and dives in both fresh and salt water.
In open water, the student must swim (no gear) 200 yds, dive to 10 ft (no stopping allowed) recover a 3 lb weight and hold it on the surface for at least 2 minutes.
Hold breath underwater for 20 seconds, surface for 10 seconds, repeat.
Snorkel 400 yds, surface dive to 30 ft.
Wearing full SCUBA, snorkel 300 yds
Simulate rescue of diver from 50 ft, hold on the surface for 2 minutes
At 20 ft, swim on SCUBA without a mask at least 25 yds
Navigate a triangle with legs at least 100 ft long, marking each point with a surface marker. Must return to within 20 ft of the starting point.
Plan & execute a simulated decompression dive.
Remove and replace mask & regulator while between 80 & 100 ft.
It's just a little more than "nothing more than at least 25 dives w instructor, some deep dives and some theory."