This will NOT become a Chinese Lehman Brothers, because the CCP knows that a Chinese version of 2008 will lead to them dangling from nooses on the lampposts in Tiananmen Square.
An odd assertion, given that nothing of the sort happened in the United States, which has widespread civilian arms ownership (unlike China) and various openly active dissident movements, including the militia movement, which enjoy substantial sympathy within the military and local police.
It doesn't seem like a 2008 with Chinese characteristics is being forecast by many, but it seems the reason for this is just that Evergrande is more isolated from the rest of the economy than Lehman Brothers might've been (although how this could possibly be true makes no sense to me), not because the likelihood of revolution is greater in China than in the United States.