Yep, it’s mostly just about consistency across the dev team. This is coming from someone with multiple Linux machines for personal use and hobby projects:

At my first job, devs all had Macs. There was the occasional guy with Linux but he was always had trouble because all the scripts and dev tools were made for Mac, so he had to constantly be rewriting and modifying them to work on his machine, and wasted time doing so. Nobody used Windows for development since it wasn’t Microsoft, lol.

But, when the Apple Silicon Macs started appearing, that’s a different story…