It doesn't matter if he told them or not to grab the zipties and make the pipe bombs, he was riling them up about how their country was being stolen from their dear leader, the only politician who cares for them, right before their eyes, and to take that sentiment to the ceremony of ratification of the elections he lost.

Parler was a place where people discussed these things leading up to an abortive coup or revolution, however you want to call it. The US clearly doesn't have the means to control these things as of now, Big Tech taking the matter on its own hands is merely symptomatic of the lack of legislation preventing the spread of radical fascist ideology.