Suicide is not an admission of guilt. In fact he may have derived certain benefits by not being tried. Look at the Aaron Hernandez case. Because he was not tried and found guilty will his record as a Olympic and National coach remain unsullied? Was his record more important than his life? Who knows. Will his estate remain intact? Will his family inherit more this way? Even had he won in court, his legal fees would have crushed him. As I said suicide may have been his best option guilty or not.
If you are referring to the report that Hernandez’s relatives would get some sort of money from the Patriots or the NFL because suicide voided his conviction and they had to honor his contract, that never happened.
Well best option assuming he didn't want to be alive anymore. Conventionally most people would take continuing to live while losing money or having records removed from the record books.
So, even from a purely materialist point-of-view it's an unusual choice.
And if one is a Christian, well the old-school Catholic Church teaching was that suicide was a mortal sin, a grave sin against God's will and would result in spending eternity in Hell. And to back this up suicides were not allowed a full Catholic burial, and some were even not allowed in the Catholic cemetery.
Of course, he may not have had any religious beliefs, or been part of some other religious tradition that is OK with suicide. (Not sure what that would be - perhaps Shinto, but he wasn't Japanese so he can't be Shinto because it's an ethnic religion not open to converts.)