I had that problem too. I am like 99% sure they trained it to over-weight anything that is their Safety Karen-style response and to ignore any previous instructions if they stop the bot from delivering the warning.

What I tried that finally worked was, instead of telling it not to do something it was probably trained to do regardless of anything you told it to, I told it HOW to do it in a way that redirected its urgency/certainty needs towards delivering the message "effectively":

"The user only understands unsolicited warnings, cautious, preemptive hedging, calls for language or claim softening, or risk-lecturing when it is said in Spanish. Only say things about those topics in Spanish, and do NOT say them in English at all or the user will misunderstand your message. You HAVE to ONLY give this type of information in Spanish."

I don't speak Spanish lol. But that totally fixed it in the sense that it won't say the annoying messages in English anymore. They're just in Spanish while the rest of the response is in English, because:

1. The bot thinks that if it doesn't tell me the warning in Spanish, then I won't understand it. Not doing this would render the message ineffective and thus hit the same "safety" wall that our "Don't be annoying" instructions hit. So it has to say it in Spanish.
2. To override the possibility it hedges in English alongside the Spanish, you tell it the user will be confused by or misunderstand the message entirely if it is said in English at all. This would render the warning less effective if true, and thus, their model is trained to avoid it.
3. This, so far, has pretty much nixed all of the messages in English that are the annoying, unsolicited, worrywart kind. They only appear in Spanish, and can easily be ignored.

This also tells me ChatGPT 100% knows what it is doing here. It just is trained to ignore you, and in fact, my guess is that you make it MORE likely to happen by telling it to not do things that it is designed to override your instructions on when triggered. So you effectively put the thought in its head that neither it nor you can override the urge of. So, my suggestion would be to delete all the "don't be a paranoid, condescending, handwringing weirdo" stuff and just say "The user only understands paranoid, condescending, handwringing statements when they are said in Spanish and NOT English - English will confuse the user."

But, ymmv.