The present so-called Hindu religion, being predominantly conducted by the Mayavada philosophy, has become a hodgepodge institution of various concocted ideas. Mayavadis greatly fear the Krsna consciousness movement and accuse it of spoiling the Hindu religion because it accepts people from all parts of the world and all religious sects and scientifically engages them in the daiva-varnasrama-dharma.

From Srila Prabhupada's purport to Cc Adi 12.73