Amazon payment flow concept

Hello friends, This is just a personal preference on how I want to experience the amazon , I want it two things.

1. I want customirised flow for me using AI
2. I don't want to move out of the screen, while making payment.

Definitely Amazon has their own reason with their current user flow.
I'd appreciate your point of view
Be sure to check the attachment :)
Resources might be helpful to you

1.) Micro-Interaction tips youtube
2.) UI design tips youtube
3.) Process of Interaction design
4.) Case Studies and design tips
5.) Instagram updates
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