His plan was that by threatening people into publishing his manifesto and drawing attention with the bombings he would sway people over to his cause (the fallacy here being that if only people were exposed to his ideas, they would agree with them). Of course he was deluded in that sense but it’s a pretty common theme among extreme ideologues.

I don’t think his ideas are as laughably naive as you think. He was an accomplished mathematician who was disgusted with the societal rat race and thought many aspects of technology were making life worse, and I actually tend to agree with that. But he was also a nut job who killed innocent people