4chan is still mostly teenagers and 20-somethings from middle class families shitposting for fun
4chan trolling nearly resulted in a coup, its reached a new level of seriousness.
There are several documented terrorists who are active duty police officers and the terrorist who was killed was an Air Force officer.
Seems like this coup attempt had plenty of support from the Military and Police.
A few things:
1. It wasn't a coup, it was a protest to protest the unfair election and overall left wing bias. Same way BLM was to protest the unfairness of how black people are treated.
2. It was mostly organized on Facebook and the general "normie" web