I don't think this comes up in any of the talks directly, but my mind circled back to this during the Degrowth talk...
Knowledge of tech is a kind of power (e.g. if I run a community server I have power over the tech and the way this community works, and this is A Problem), but as a tech worker in a company I don't have a lot of power (e.g. if I don't want to build the product my company wants me to build I am out of a job). This is a tension that I find hard to reconcile as a tech worker.
Having the way we share and receive information being effectively controlled by a small number of people and limited by technical skill and access to capitalism is, I suspect, a significant part of why we have terrible outcomes; there's very little democratic oversight because what is actually going on in tech is poorly understood. And so it's far too easy for democratically elected leaders to get bamboozled by tech barons.