It's certainly something that looks better, but contrary to green washing, I see real, practical value.
I would rather be able to see and inspect source code than not. And I would rather have the right to take and fork a two year old version than not. Or be able to wait two years to fork the current version.
Those are real good value. Those bring certainty in infrastructure robustness and freedoms.
Looking at the Web Archive; Diatraxis has been around since 2021. That divio docs since May of this year.
I doubt they didn't "get inspiration" from Diatraxis.