This seemed like a really interesting resolution when I first read about it. But it’s extremely counter intuitive. I think we need a flash game simulation where you can play with the initial conditions and see for yourself what happens. Could also be a really cool premise for a video game puzzle lol.
At first glance this appears to create a “paradox” of another kind.
You can send a complex system back in time without a time travelers paradox ?
But you can not send a simple system with a very small number of finite states ?
I cannot speak for Chronos of course nor am I a physicist.
That said, because this made me pause as well, I think the notion is if you are a complex system it can be supposed there are a lot of states to be tweaked we can suppose it all somehow works out that some parameters or others are tweaked to avoid a paradox. You can’t account for them all and the Universe does one of its sleight of hand things and voila…no paradox.
I am guessing Chronos is posing a simple system that has only two possible states. Period. Then you setup the experiment such that a paradox must occur if you put the thing through a time machine. Now, the Universe has no choice, it can’t pull its sleight of hand and either you get a paradox or the Universe intervenes to just stop it altogether (forbids time travel in this instance) or some other interesting possibility (spawn a new universe maybe).
In short, Chronos is trying to back the Universe into a corner on this one. 
Hey, my brain just hurt bringing up the point 