The farther you get from the proximate medical cause, the more supposition and speculation is involved.
Or, from a different epistemological viewpoint, the root cause of everything is God’s will.
Ascribing importance to intermediate causes is highly subjective, even assuming they can be reliably determined.
Only if you think that the laws of physics are deterministic, I guess.
and "he died of being homeless"? why was he homeless? because society was so cruel and uncaring? sure, he had nothing to do with it himself.
the other comment is right, this path inevitably leads to judgment and speculation.