On the contrary, in my opinion if they are clearly labelled as a joke, they are a great way for people who don't understand them to ask why and, in the process, being a little more informed on what not to do and what it's dangerous.
Especially because there's really no risk of emulation in this case.

Unfortunately, in general, people tend to just read, vote, and then forget about it without checking back: that's why I always try to add some source or ways to verify what I post.
And - in this specific case - probably some people just like LTT, I assume.