Thanks!
I believe that due to his health conditions he was likely already dead, or possibly died in a bombing campaign somewhere, as his body would likely be buried and never found. I believe that the US probably found out he was definitely dead, and so staged the assasination of one mid level Pakistani militant claiming it was Osama to cash in on those votes and public opinion, instead of losing face.
The entire thing is just US government/military narrative with no evidence backing it up.