At least in large enterprise software world, I have noticed in recent years that managers are starting to offload everything to the individual contributors. For example, in the early 2000s when I started my career I remember managers would do project management and interface with other teams, among other things. I've started that at least in my last 3 positions, managers will typically offload this work to engineers, who don't typically have the skillset to do these things and thus causing a suboptimal operating environment.