Net neutrality is about carriers treating all traffic equally. Banning a country from the internet is discriminating traffic by origin. That sounds like a net neutrality issue if there ever was one. Whether the discrimination happens in the hardware or in the software stack is a mere implementation detail.

So because the Chinese government are being hostile, all the chinese companies innocently doing their own business should have their comms cut off as well? Chinese families should not be able to contact their travelling members? This is definitively the exact same issue - the Chinese government is not the only entity to use the Chinese intertubes.