That is the most ridiculous explanation (Nash's, not yours). If they don't want to research and stick to a minimum of reality, why stick to reality at all? Just ignore time and space, ignore socially held norms, ignore racism, ignore homophobia, ignore the science behind cancer...
Agreeing with everyone that it was cliche after cliche in the finale. Theo is ever so annoying. Which 10-year old sees someone and yells their name? "Uncle Rome! Auntie Regina!" Maggie is so full of herself. "Aren't you coming with me?" To London. Right now.
Eddie found his clothes that were put in a backpack while wet some 20 years ago, and there is no mold, they are dry and not smelly, they are basically new and washed? That was laughable.
My take for next season:
Time jump, Maggie comes back, Rome and Gina are separated, Delilah will be happy and helping everyone because OBViOUSLY that's what she does, we all know that, Gary will be waling Colin and with Darcy but will fall back into his annoying self once he sees Maggie, Eddie will be depressed or in a coma because that accident was SO SERIOUS!, Katherine will be cuddling with Theo. And I am not even trying to be sarcastic here. I think this is all the the realm of possibilities for the writers of this show.