I remember watching the first episode as a kid. Good times.
I used to find Nobita to be quite relatable except for the sleeping and getting terrible grades. He still has heart though.
Some things in Doraemon just don't make sense because of the many paradoxes but I'm glad they tried to adress what should be one of the biggest issues in chapter 1.
I have a theory that this whole thing is a charade by Sewashi or someone else from the future.