That first one is almost a copy of a reddit comment from a couple days ago. I didn't agree with that comment and I don't agree with this comment.
Supposedly by someone who works there. Part of it doesn't make sense to me.
This sounds way better:
Lots of References to Ancient Egypt : DeathStranding
Black stuff being an aging compound doesn't make any sense and would be lazy writing if it's used to age babies. Plus this trailer shows the plants aging in a fast time way without any goo. Plus plus no one else has aged who's interacted with the goo.
Haven't read the second yet.
