Most of the corporate world runs mixed operating system environments. If you plan on working at a company, and will use a computer, chances are it’ll be Windows. Being able to use both is an advantage. In my 25 year IT career across all spectrum of industry, more Windows is used and Linux is niche. But the Linux users typically really know their shit. There’s a lot of skills carryover between the two operating systems. I could get into specifics if desired.

Linux for most is an active decision and requires some knowledge about tech and an interest in it, whereas Windows is default for most and used by most people, not just people who like tech.