Actually without knowing the autopsy results it is the opposite - very suspicious. 35 years old people don't just die at home. Let's hope the results will not be that he died of some kind of drug "overdose".
I once learned more than I bargained for when I asked too many questions at a friend's funeral. If his close family members don't want to elaborate on the circumstances surrounding his death, it is probably best not to press them.
R.I.P. a great hacker who left this planet before his time.
PS: Also since it's not suspicious we can rule out your theory as anything like that would most certainly be suspicious.
Young people do just die for unobvious reasons, both to the (comparatively) famous and the obscure.
It's not that uncommon that 35 year old people die at home. Common causes are suicide, unintentional overdose, aneurysm (brain, AAA), arrhythmia, a fall.