Question and a theory about sfawtde

Why derlord items were swapped in the part he turned left? Like i get it that this the url link to the druve but they are a lot of unanswerd question about it if u keep thinking about it.

Firsty derlord did not change the items and he just figured that this can lead to the drive? My point is that i do not get the main purpse of the item, i get the pruprse derlord found in them but if someone set this up this is scary.

The second thing is about avery, he said he was going from his house and found this mine but why he did not change the item in tbe invertoy?

Maybe i am misunderdtaing something here but let me know