If you do read the description on the site it says:
This video is a paradox. You’d have to drink a lot of beer to get all those bottles. You’d have to drink a lot of beer to want to build this. You’d have to be totally sober to pull it off.
That is true. Anyway, I don’t see why they made that all out of empty beer bottles, when you watch the video you can clearly see that there were some broken bottles lying around, and thats a lot of glass that needs to be picked up, before they get drunk and kill themselves on the glass.
I bet someone who’s friends with people who like to drink, saved up the bottles, and told his sober friends that by setting this up, they would get super drunk when it works.