And did you see how well known the person is about the old users in the forum? : https://bitcointalk.org/index.php?topic=5251074.msg54500785#msg54500785
Also in the pledge topic where he was asking it for his funeral, it seems it was him.

And then he died and according to all those obituaries he died on April 8, 2020 which was after he made this post to ask for his funeral cost.

All these are still too much for me to have a conclusion.