LOL. That's hilarious. But, yes...it really is an option.
I've been doing web development on Windows since forever. For the last 5 years I've focused almost exclusively on Node.js. I also use Python 2 and 3, Django, Ruby, PHP, Postgres and MYSQL.
Furthermore, I run many projects with tech that Linux and the Mac OS don't have such as IIS, SQL Server (the two pieces of tech that 90% of every small/medium and large businesses are using in-house to build or run custom software for themselves.)
You sir are uninformed. Roughly 30% of all public websites are running IIS on Windows (~10% of active sites) and you can rest assured that percentage goes way up for internal/intranet sites - https://news.netcraft.com/archives/2016/02/22/february-2016-...
What.