That doesn't really matter much, the majority of people who mine on pools don't switch to other pools when said pools support different consensus rules.
At least ove 40% of the hashrate is from Chinese pools. This isn't an issue in and of itself but the pool operators could more easily coordinate an immediate attack on Bitcoin.
But then, it needs to be seen whether this 40% is united or not. If there is no consensus between the various pools, how they are going to launch a coordinated attack? And my guess is that at least some of the pools are not in speaking terms with each other. But then, it will be a different game if the Chinese government orders the pools to do something.