Ha, good points. maybe I owe you some explanation.
Jwno itself is free and open-source, you can get the exact same executable files from the Github Releases page. The Itch.io listing is mainly used as a “sponsor link”, and the price includes extra tech support service.
Feel free to use what works for you. I run Guix and StumpWM at home, and I built Jwno partly because I wanted to make Windows more…bearable.
Thanks for checking it out :)