When the bike is the lock and you don’t have the key it really puts a damper on why or how you steal it.

If you cut up the infrastructure that you lock to, you still have a bike in a weird position and need a key you won’t have. Most bike lock thieves focus on destroying the lock which you can’t do if the lock is the bike.

Making the structure of the bike the structure of the lock is a great idea because of this.