The problem is proportionality. Things like this probably benchmark insanely well. But the workarounds and risk involved - it literally fucked with his system's browser settings - aren't commensurate with the bug.
I could see this going wrong in many hilarious ways. Prompt: Fix data corruption issues. Claude: I didn't have access to the code, but I found I have access to your production environment through chain a -> b -> c -> d. And I found the database password via x -> y -> z. So I wrote a script to regularly query the database for new entries and placed it as a cronjob.