I'll never understand the fascination with 'cyclers'. They really only give you ONE thing. More living space during the transit. That's all. You still have to bring ALL the supplies with you (no mass savings), you still have to accelerate to TMI (no propellant savings), and for what? To save on habitable volume? Remember that this is living space volume AND cargo volume that will be needed on Mars when you get there.And as a cherry on top, you have a very narrow launch window, and add another failure more if you fail to rendezvous.Cyclers are just a bad idea, and Aldrin arguing for them doesn't make it any better.
Note: Your comment re restricted launch windows gives me pause. Hmm, maybe I'm misunderstanding 'cyclers'? I envision a craft that's constructed in LEO, and transits to Mars orbit where it offloads cargo and people to a lander that came up from the surface, then it transits back to Earth orbit where it gets it's next batch of cargo and people. Repeat ad infinitum. Guess I'll read up on Aldrin's version.