Well, you say that you actively seek out people who are taking up multiple seats just to piss them off. I assumed you are doing that because you recognize a single person taking up multiple seats is not something to be encouraged. Yet you choose to be a person that takes up multiple seats.
Also, you recognize that every commuter is frustrated, yourself included. Yet you are willing to add to other people's frustration just so you feel better. I said hypocrite because you are acting in a way which you inherently disapprove. If you aren't doing that, then I retract my previous statement.