Although post apocalyptic I think they did a good job of portraying that the world has to an extent been rebuilt... They even have teleports and stuffs.
yeah, I get that, but...... Ports and motorcycles, but they've never heard of airplanes? Beastpeople and the ability to keep someone alive for 300yrs, but can't create synthetic organs and such? I'm a car guy, I can't help but think of shit like this 🤣. Also, the human mind has a limited amount of storage capacity. Over 300yrs Cyrus would've lost most if not all of the memories from pre-fall through no fault of his own, he wouldn't even realize it happening. The older memories would just get written over, like a vhs 📼. There would be no way to get them back because, to him, they never existed. No amount of external stimuli would help. The only way would be to somehow download them to a storage device to access them at a later date.
A good number of his memories *are* missing, or at least unavailable to him currently, for those 300 years he was making mostly identical and unimportant memories that would mesh together rather than overwriting his important ones. They do have synthetic organs to a degree, that's what they're implanting into carriers after they take their organs. They're using carriers as living bioreactors, not entirely sure why they haven't made a replacement for them but I assume that like with Cyrus's heart, the people who would be making such improvements would either not work there or dispose of themselves to avoid the control of or giving power to Darius. They have things they *could* use as fuel but they're relying on kinetic energy to charge batteries, could be that they prefer clean energy? And if you have ports like that, airplanes aren't necessary or efficient. Other countries outside of the port network probably wouldn't allow traffic from their country anyways given the bad relations mentioned.