I'm not sure it's an attempt to gain merits but it could easily be trolling with a throwaway account. Anybody could come on here and proclaim a user who has disappeared for a while is dead or make up some other story. With that being said, tecshare didn't seem like the person to just leave so this story could be entirely plausible, but anyone can get annoyed with this place and just leave for whatever reason. Maybe op can at least offer some proof without revealing too much that they were in contact, but if not I'll err on the side of caution right now.

Op says a couple of things that hint we might not get any more info though ie He was also a very private person and the cause of death as suspected to be an aneurysm/severe stroke, but surely if it was sixth months ago they would have known what it was by now.