Creamy. It's not one busy airport that is the problem. It's 100s of landings taking placed very day at private strips all over our land. This requirement will only work if most don't give any radio calls- and that's what must happen.
However if most don't give calls why have this unique requirement?
Also I am positive some calls are mandatory in the vicinity of an airport. Creamy you understand the law- are you telling me a pilot can arrive at a CTAF and give no calls at all?