I was sent the link to the video by a blog reader in the comments.
The video looks like an obvious provocation to me, aimed at:
1. to ridicule criticism of YTubers cursing and demoralizing youth and children.
2. gaining viewership
The truth is that in most cases you don't have to sign any cyrograph to receive success from Satan, you just have to ...SINK.
It is enough to be on the opposite side to God. Satan gives success for sin. God blesses for keeping the Law if it is His will.
Gro YTubers have achieved great success by learning about masturbation, swearing, teaching hate, etc. etc.
There is colossal money going into Satan's kingdom and the fact that the Christian world still exists is solely due to God.
https://www.youtube.com/watch?v=0AVEI67CVxY
English 
Polish
Clearly the guy doesn't know what he's really talking about. Paws up in support of stupidity.
Unfortunately...