Yes, there are various places where it is important. For instance, the empty state:
Here, the problem is not visible because the content is short. If you make the text slightly longer so that it goes over two lines, you will see the problem.
Another example are the footer help, that are available throughout the admin and that are not currently achievable due to lack of text centering:
I think that when designing this you were thinking that you could just use grid and justify items to center, but this does not work as soon as you have multi-lines text.