[ko9000]

looking at filenames in top one there's a bunch of built dlls and exes there which looks like it is just installation of built code instead of source..

[banana_giraffe]

There are some source code archives in there:

https://pastebin.com/LyLH9bLR

There is a lot of filler, though. I assume the videos are trying to convey some point, but I'm not sure I care.