Amazon set a min hourly wage of $15 in 2018 and has benefits like $100 worth of annual Amazon discounts. The federal minimum wage in 2022 is $7.25. Amazon probably pays a lot more than $15/hr in 2022. How is paying more than 2x min wage disrespectful to their employees?
You're setting the bar at the federal minimum wage, which hasn't kept up with inflation for some time (not much good if it's raised if the cost of living rises faster). One can look at the federal minimum wage with disdain (I encourage folks here to try to live on ~$1200/month), and also observe that how Amazon treats its retail workers is still exploitative (both at fulfillment centers and the delivery network).
Regardless, a union is likely the solution for workers to improve their experience at Amazon at scale until there is enough political will (legislation/labor regulation) to stop treating these people as disposable.
I'm not so sure about the wage, but the working conditions are inhumane according to all what I read (obviously I haven't worked there myself). The dirty tricks they use to hinder unionization just confirm my impression.
I'm going to use an extreme & contrived example here.
How would you feel about a company that pays $200 an hour, but 90% of each new batch of hires are fired by that company within a week? And the 10% who don't get fired have to physically exert themselves through things like holding it in when they need to use a restroom, and operating with less sleep than is necessary. By the end of the first month, that 10% is reduced to 1%.
