I am also NAL, but I don't think moving to CA gets you out of non-competes and I've seen evidence of this (one well covered story involved an Amazon exec going to a Bay Area company and getting sued).
For warehouse and delivery workers... There's probably a chapter in the Bible just covering that.
I’m not now and never have been an Amazon employee, but the bonus plan just seems sensible to me.
Also, once again, do check the law where you live. It's very possible that non-compete only apply on stuff you worked on. For example, maybe if you did not work on S3 specifically, you might even be able to work on Google Cloud Storage if all you are considering are companies that make public clouds.
> It basically limits me for working for a competitor of ALL of amazon for 18 months.
Amazon have an incredible long-tail of badly-made products across the entire software market. They do a lot more than cloud hosting & book delivery.