I just read an article about a 19-year old making $10,000/month from the Alexa developer incentive program. It's sad that this will be ripped out from him and other developers in a few months.
I stopped trusting Amazon years ago when they banned my seller account and my business was shutdown overnight. After 15 years, I finally got my account back with no explanation. At this point, I no longer care and have moved on.