I don’t think it makes any sense at all to have a dedicated Severance thread and keep everything spoiled. You know what thread you’re in, unlike the General Discussion thread.
I also rewatched S1E1 last night, and part of the intro questionnaire for Helly R is “can you name a US state?” She did know a state, but couldn’t tell you her name, eye color of her mom, etc. And Mark calls her answers “a perfect score”, so they establish pretty clearly that they know “normal” things, just not any personal things.