With anything this public, such questions will inevitably arise. It was not my intention to be ghoulish or inconsiderate in asking the question.
A family member of mine died in a house fire as well, and her death prompted the development of new insulation safety standards in Germany (this being a number of decades ago). Knowing what led to this fire is of interest to me.
I've edited my grandparent comment to remove the link to his Wikipedia page, and default to the heavy.com link posted above.
Though I don't think I ever met him personally, I like many here was very moved by his ideas and his ethics and his works and am really saddened to hear this news. Like you I also have questions and would like to hear more. I always find it helpful in grief to just hear what happened. Was it a mechanical malfunction? Was it a lack of fire alarms? Was it arson or murder? Was it suicide? It's extremely sad, and only 1/1000 deaths in the US are now caused by fire, and am just wondering how it could happen to such a smart, young, generous person.
Sounds like a very painful way to go... I wonder if we'll get any more details in the coming days.
EDIT: He passed away in Connecticut, see child comments.