All amateur sports in Ireland are the same not just the GAA that gets funding from Sports Council. The anti-doping is for all levels of GAA not just Inter County but I doubt tests have been carried out on club players as last year only 97 tests were carried out on GAA players. Its also a condition of eligibility for the Government Eligible Expense Scheme and all county team support personnel (e.g. managers, coaches, medical personnel, nutritionists, psychologists, officials).
It's there to protect the players and don't see what the problem is especially when all clubs in the country have benefited from funding from the sports council