There's a virtue ethics argument to be made for not doing this. It's not bad for the LLM (because it's not sentient, nothing can be bad-for-it), but it's perhaps bad for the experimenter. The main argument for doing it is out of spite for the promptfondlers.

I personally see dolls and stuffed aninals nore concerning as they, at least for the majority of stuffed animals I have, are more anthro/bear on 2 legs kinda human like kind. And I can easily see how people are more able to look at that and envision a person they don't like or wronged them somehow and then kinda escalate from there. Moreso than text on a screen due to it not having a physical form that has even somewhat of a human like form. I can easily see because I have done something similar in the past with stuffed animals. Thankfully, I never acted on those thoughts and haven't had any in maybe a little over a decade.

Though, I totally understand the whole torture anything urge red flag thing. It's absolutely a red flag for me, but to a slightly lower degree for torturing clankers.