I do find it useful in discussions of LLMs themselves. (Gemini did this; Claude did it too but it used to get tripped up like that).
I do wish people wouldn’t do it when it doesn’t add to the conversation but I would advocate for collective embarrassment over a ham-fisted regex.
It's always fun when people point out an LLMs insane responses to simple questions that shatter the illusion of them having any intelligence, but besides just giving us a good laugh when AI has a meltdown failing to produce a seahorse emoji, there are other times it might be valuable to discuss how they respond, such as when those responses might be dangerous, censored, or clearly being filled with advertising/bias
That provides value as you’re comparing (and hopefully analyzing) output. It’s totally on topic.
In a discussion of RISC v5 and if it can beat ARM someone just posting “ChatGPT says X” adds absolutely nothing to the discussion but noise.