This is true. Taliban are carrying too much baggage for China to openly support them.No need to accommodate the Taliban unless they undisputably win. If the old secular government abandoned by the US starts winning we should back it on the condition that they take Chinese interests into special consideration. It's much easier working with seculars than extremists.
Can you imagine China supporting them, and then Taliban becoming emboldened and start committing all sorts of attrocities in order to enforce and keep their power?
China cannot just pray and hope that the extremists would keep their words and dont drag China's reputation through the mud
However for the old civilian government to be possibly supported by China, the US and Indian puppets should be expelled first as a condition