Sorry, dumb idea.

Beyond the possibility it could damage expensive bits, one could still walk it away quite easily. And it does nothing to prevent a lift-and-carry theft.

Besides, give me a minute and a chain tool and I'll ride your nice Bianchi away leaving your silly little "Dear Diary" lock behind.

Edit: Oh, wait a minute. SRAM rear dérailleur on your Bianchi. Betcha it even has a PowerLink on that chain. No tools required to defeat your lock.