Matty Roth, is increasingly becoming a Che Guevara parallel. Like Che, Matty starts off as a non-combatant looking to do some good. (Albeit a reporter instead of a doctor). He becomes increasingly stricken by what he sees and and passionate about a cause. (In Matty's case the welfare of the people in the DMZ). Both get taken under the wing of a charismatic, rabble-rouser leader looking to come into power. Both abandon their non-combatant profession to further support the cause. Matty even gets accused by the propaganda network Liberty News of running a "death squad", and at times his hair and beard get increasingly long and ragged, although not quite Che style. Since the series isn't over yet, it remains to be seen if Matty winds up the same or not. — The Wanderer
Answer: not quite, but the earlier parallels are still there.
It's highly unlikely that Manhattan would be able to survive cut off from outside supplies for any amount of time, let alone a decade, despite the attempted handwaves with things like rooftop greenhouses and Wilson growing some of his food in basements, even for the 400, 000 survivors since the fighting started. Matty describing how everyone thinks the DMZ is just rats and cannibals in the beginning is probably too optimistic for what it would be if the situation occurred in reality.