I wouldn’t generally require people to “compile their findings into a report”, but in this case the messages are weirdly devoid of any checkable information and then the reddit user in question mysteriously lost a laptop full of findings, so, yeah, these claims are not compelling. I don’t think the reverse engineer in question was lying, per se, but I do think they were very wrong at first by random chance, the story gained traction, and then they were too embarrassed to admit they fucked up.