A lot of performative outrage seems to be propping up a very large white collar industry of sensitivity training and related roles, and a lot of it might go away if there were more alternative, stable white collar industries that were related to skills taught in college and did not require constant learning and new skill acquisition.
I also think people who have a hard time learning new skills at the ever increasing pace technology demands lean on performative outrage as a way to scare employers and increase job security. If people felt more stable in their jobs, another chunk of performative outrage would probably disappear.
And I also think a lack of social belonging and attention from things like family and neighbors you’d get from a middle class household experience leads people to use performative outrage to get a fix of attention they’re missing.
I combined a lot of those ideas/what I’m saying may not have been clear, but those are all side effects of a shrinking middle class and pathways to the stable mass achievable paychecks that enable it.