This is a semantic problem, not a physical. Generally, there is no single definition of the word 'universe' that all physicists ascribe to. When you have causally disjoint set of spacetimes that may or may not be governed by the same set of physical laws, some people choose call these multiple universes.
In Japan? Maybe. Globally? Not even close. As recently as 2004, there was a tsunami in the Indian Ocean that caused over 200,000 casualties (compared to the 15,000-20,000 casualties of the 2011 Japanese tsunami).
In fifty years, people will look back and call us unethical for possessing the necessary tools to prevent many birth defects and hereditary diseases but choosing to not do so.