Why do their death have anything to do with 杨振宁?

杨振宁 is correct that he“总是能在关键时刻做出正确选择”.  Judging from the choices he made, he is clearly smarter than 萧光琰 and 姚桐斌.  No wonder he won the Noble prize while the others didn't.  I don't see how you can call anyone making the right choices for himself 卑鄙.  The very problem of culture revolation is trying to make people not self-interested.  The result?  - just look at today's China.