He is locked in California, a fairly progressive and leftist state i think , I am not entirely certain all that therapy is a good thing, i think i watched a documentary saying that psychopaths only learn from therapy how to be better manipulators and i feel like he sounds like psychopath even now.
With that said if he gets out of prison i think he should be allowed to participate in FOSS (when someone reviews his contributions), i can’t help but wonder if his reportedly unhinged behavior on the kernel mailing list was handled better (e.g. mandating he will go to therapy) the murder would not have happened.
The prisons he was in previously definitely are not the touchy-feely kind. These days he’s in California Health Care Facility, which is geared toward prisoners with significant mental health problems (notably, multiple serial killers). So, therapy of some kind definitely makes sense. However, Reiser’s been denied parole each and every time he’s been up for it (next review in 2025), so it is unlikely that he’s getting out.
I feel like it is impossible to know enough details to make any kind of conclusions. I do not think foss should check criminal records though.