you tried to explain each question in your best way and in second question I really agree with your answer that if we keep in mind accessibility of the blockchain and we think about implications of account abstraction then main purpose for it to attract different users to block chain as well as increasing of originality and giving a smooth experience to users are also very important things to consider

It is very important to understand that if we are going to implement account abstraction at steem then they will be very helpful for enhancement of security and privacy at that blockchain as well as drawbacks of account abstraction are also very important to consider I wish you success in this engagement challenge and I wish to see good content from you day by day