How can EASA accept training given by foreigners, yet within the member states everyone has to jump through different hoops.
The hoops within EU States is what EASA intended however; they were caught over a barrel with one or two large German companies conducting training overseas and were obliged to continue the concession granted under JARs for training outside an EU State. If you want to teach PPL, it will be far less effort to meet the requirements than to try and move the unmoveable.