Answer:
Yes
Step-by-step explanation:
The most important way to ensure the existence of the human race is to ensure that our natural resources are not depleted such that we will pose environmental problem to our space, hence the restriction imposed by China on rare earth metals is a step in the right direction.
In addition to the above, these are resources that are non-renewable and in few decades to come, we might not be able to access these resources again, thus a need to ensure their availability for future use.
It can be concluded that this restriction will give room to look into another means of creating wealth as well as employment as we may have to invest into ideas that will generate an alternative to these resources.
This will also protect the environment as earlier mentioned.