At my workplace all the devs are on either Mac OS or Linux, with Mac OS being more common among Web/PHP guys and Linux among the backend devs (like me). As it turns out, given the choice, nobody actually prefers Windows. I'm still baffled by Mac OS being so common, though, at least among devs.

This works because our whole IT infrastructure is designed to be accessible via the web-browser, most of it even without VPN, via two-factor authenticated single-sign-on, most of it self-hosted (all except Teams, which obviously also needs its own authentication). This gives people the freedom to run whatever OS they like on their computers and set it up themselves, with the only requirement being to use FDE with a strong password and regularly do backups to the remote storage. We're also allowed (if not encouraged) to use the laptops for private stuff and get to keep them when they're replaced.

And as far as I can tell IT problems because of this diverse environment are surprisingly minimal and mostly with those aforementioned web services.