Developers en masse do not run Linux as a desktop, about 80% of developers run Windows or MacOS. Your average software developer isn't going to figure out what linux distro to use on desktop, then install and configure everything, its a decision making nightmare for most. I'm not stating that as some sort of derogatory comment, its just not going to happen, most users don't want to spend the time.

Somewhere in the demo of it (its a long demo but there's a lot to unpack), DHH creates a theme from an image, it picks thematic colors from the image and changes the entire UI theme. It looks beautiful, which is not something I could have said in the last 20 years of looking at Linux UIs. They mostly all have just copied Windows or Mac UI elements and call it a day.

I'd like to see where this goes, having a large foundation funding efforts could really make this a viable alternative to a large chunk of personal computer users. My understanding is the funding is mostly going to fund open source contributors to go "full time" and/or get paid for their contributions.