You might be right. From my experience, it depends. The edgier your exploration, the more that can happen.
It's important to note that not everyone abide by the same morals. And a narrowly constrained model may end up refusing genuine inquiries just because.
In any case, if anything, this is a small 'but'. OP's point is the gold nugget here. That is, LLMs allowing exploring subjects without the fear of being judged for one's natural curiosity.
Yeah, I'm in no way claiming that this isn't a thing, or even that it isn't a problem.
But it isn't a problem for most people. The kind of edgelords that run into this are overrepresented on internet forums, including HN, but it's actually a pretty small group of people.