The thing to keep in mind is that they have competitors still eating their lunch while running 40+ year-old COBOL backends which have their IS departments tearing their hair out regularly. It's as if the efficacy of a business isn't completely positively correlated with the coolness of its tech stack. I work for one of their competitors, and I'd kill for their tech stack. But ultimately their business revolves around…
I interviewed with them in 2018 and at least at the time (much much smaller company of course) everyone there was very focused on the tech being an enabler for the logistics people. Their claim at the time was that all of the projects they pitched as possible work were driven by feedback from the front line people. Maybe that wasn’t true then, or maybe it’s changed, or maybe it’s still true but it’s not enough?
I have worked as a software engineer in Operations in Amazon for years, and this even if this is true, it is not all positive.
What it meant for us is that instead of developing a solution we developed small disconnected projects here and there, that all required slightly different maintenance, different technology to build, etc.
This was a problem technically but also personally as there was nothing meaty enough for a promotion, and most projects were incredibly boring "I want a dashboard to show metric X".