Higher hash rate is good for security, less centralised mining is also good. However a lower hash rate means less security, but if it is temporary reduction, w

Higher hash rate is good for security, less centralised mining is also good. However a lower hash rate means less security, but if it is temporary reduction, whilst equipment moves elsewhere, this reducing reliance on mining in one nation, then the reduction in hash rate in the short term is not ideal, but has long term benefits for the network.