Author of linkerd argues that splitting this responsibility will improve stability as you'll have a homogeneous interface (sidecar proxy) over a heterogeneous g

Author of linkerd argues that splitting this responsibility will improve stability as you'll have a homogeneous interface (sidecar proxy) over a heterogeneous group of pods. Updating a sidecar-container (or using the same across all applications) is possible, whereas if it's integrated into the application you'll encounter much more barriers and need much wider coordination.