The struggle for Daoist orthodoxy has always been utterly ruthless, just as when Shaolin Temple drove their Esoteric Sect into that bitterly cold western region. If given the chance, Shaolin Temple would not hesitate to wipe out their Esoteric Sect entirely.
If the Kumara Sect were still part of their Esoteric Sect lineage, then the people of the Esoteric Sect naturally wouldn't worry. Even if the Kumara Sect didn't help them, at least a deal could be struck that wouldn't obstruct the Esoteric Sect from spreading their teachings.
But now that the Kumara Sect has established its own lineage, if the Golden Khanate truly takes over the Central Plains in the future, the Central Plains will inevitably be ruled jointly by Shaolin Temple and the Kumara Sect, and the Western Region Esoteric Sect will completely lose the qualification to rule over the Central Plains.