Hi! I think that the reason why there isnt any info about getting to the red star is because people thought the only way to get there was with a bug. People that were locked in the 'Flesh Hub sequence' wandered around and found the way. Since been locked was fixed in the 1.5 update, I think that people assumed that path wasnt meant to work.
I only found it cause I was running around like crazy during the jumpscare. There is enough time in the sequence to get there plus some wiggle room. So, apart from look around during the jumpscare, my more helpful hint would be to look around the jumpscare just after completing the Atziluth chamber. Earlier jumpscares dont leave you enough time.
In exchange, I would appreciate some hints for the game preservation message that you found.
I might do another full run, since I think some of the statues near the end game were 'talking', but that might just be me been crazy.