I agree, however remember that ICAO make recommendations only.
Any country can have their own standards once they inform ICAO of the differences.....and have published these in their AIP or similar, where it can be viewed.
To borrow from another site....
Contracting states will endeavour to conform with the recommended practices and are invited to notify any differences when considered important for the safety of aviation.
"If it is impossible for a state to comply with a standard, it is compulsory for that state to notify ICAO of this fact, and provide details of the difference(s) between the national regulation and the corresponding SARPS. Each annex contains a supplement listing all such differences.
All contracting states are invited to regulate their domestic aviation activities and align their regulations as closely as possible in accordance with ICAO SARPS. Naturally, national laws, not ICAO, control aviation within any given country. This is why air operator’s certificates usually specify what an operator must require of its pilots in the course of operating in that country."