Electricity needed in mining is a bigger issue and need to be addressed, but this is not the reason for this crackdown on crypto in China.
One of the reason that can be considered is, Chinese government is very strict about it's control over it's citizen and their rights and crypto is not a fit in this scenario.
Decentralised nature of cryptocurrency is also one of the reason, as government has no control over it.
Agreed.
It seems they are not banning for today. But in the very near future, they will ban the mining and their reason will be the energy consumption that is used in mining is too high. That way the government will retake the control over citizens money.