purposely putting extreme effort into tricking the LLM into saying something harmful

I dont think you understand how many mentally unstable people out there are using LLMs as therapists.
There are fuckloads of cases now of people that were genuinely misled by LLMs into doing horrible things.

I agree with your sentiment, but the thing is that the companies are selling their shit as gold and not as shit. If they were honest about their stuff being shit, then people wouldnt be able to capitalize off of malicious prompt engineering. If you claim “we made it super safe and stuff” then you are inviting people to test that.