CCC was always political (very left to far left). Never understood why hacking has to be political in the first place.
There were many stories where people lost faith in politics (e.g. after Chernobyl), so people gathered together to do stuff on their own. I think being "social" (to all people), decentralized and mistrusting authorities is just a left thing. so that's just a natural thing imho
But chernybyl isnt the only or primary reason.