Marinus van der Lubbe was a known Communist activist, not just an innocent bystander. He had been involved in strikes and arrested before. Like Moussaoui he was known for his lack of experience, and back in those days, communism was the big scare touted by the Nazis in Germany.
The fact that Moussaoui's attempts were so transparent as you describe makes it all the more suspicious that the alleged hijackers were able to pull off the attacks. Either they got a lot of help, or Moussaoui was set up, much like Marinus probably was.
In any case, regardless of one's point of view on 9/11, it is clear that both Marinus and Moussaoui were useful idiots.