They used to when Mao was alive and the country was engulfed by misguided idealism. After Mao was gone they realized what a mistake that was, hence why China started reforming. The party’s official stance is that Mao was 70% right (pre-cultural revolution contributions to freeing the country from oppressors, giving common people power), 30% wrong (cultural revolution).

So whether they used to or not is not relevant.