Whatabboutism is pretty silly here. When was China a US colony? If it's ok for China to steal IP from the US, then why was it wrong for "western" countries in the past to steal from others? If it was wrong for others in the past then why is it justified now? It's either never or always ok. I vote for never myself. But if you think "revenge" stealing is justified against a country that never colonized them, then you are justifying all countries doing it since the beginning of time, because just about every country in the world was conquered and exploited at one time or another.
China is still stealing IP and has been for over 20 years. It's nothing new.