I use Windows at work (it is a corporate laptop) but I don’t use a single app which is Windows-only and irreplaceable. My current job isn’t technology-focused, and I don’t really use anything except standard office-related software.

In my previous job I was a software engineer and also used Windows (same reason; corporate laptop) but again everything I used would have worked in Linux.

People should use whatever platform works best for them. I’m a Linux user at heart, but I’m all for using Windows if that’s the right tool for the job. But it’s not a “grown ups need Windows only teenagers can use Linux” thing. Most working people would do fine with Linux or Mac.