Namaste, I feel the AcArya cannot be referring to Ganapathi or Devi when He says "Vinayaka" or "Saptr Matrkas" because He Himself has established Ganapathi and Devi pUja in pancayAtna pUja. Abhishek -- satyena dhAryate pRthvi satyena tapate raviH| satyena vAti vAyushca sarvaM satye pratishThitam||