How much do you think the on-call contributes to engineers leaving? You would think support tools and support personnel could help to retain engineers.
No, bad design and refusal to manage technical debt is the issue. Oncall only matters in some orgs and even then only matters where the tech debt is totally out of control.
Bottom line is Amazon is a product culture not an engineering culture and that makes it really easy to leave for Google or unicorns that really appreciate tech debt tradeoffs.
