I work at a large enterprise where most of our backend js .NET and I can tell you that the dev team is nearly half and half split between Linux and Mac, and nearly half and half split on using VS Code and Rider.

Most of our code is deployed on Kubernetes and runs on AWS.

Developer experience means many things to different people. Personally for my most recent project, I used F# and the IDE was Rider and my OS was a form of immutable Fedora (Ublue OS) with devpod and devcontainers and the whole system was the most joyous developer experience I think I have ever had.