Pariahship only really matter if you care. Look at both India and China. For the past 80 years countries cared about being pariahs because there was only one real country: the United States of America. Today, there are a handful of truly sovereign countries (America, China, India, Russia, Ukraine, Iran, North Korea) who will actually defend themselves without resorting to nominal allies .

In the normal state of human affairs, being a pariah doesn't matter as long as your goals get done