Nobody has threatened anything to begin with.
The article is satirical, like the whole site, and comments about a supposed group of Latin American fans planning to killthemselves in ways to channel their favourite senshi's attacks (Rei fans setting themselves on fire, Ami fans locking themselves on the fridge, etc), as *supposedly* a sign of protest to Crystal's new designs.
The whole thing is so incredibly OBVIOUS that only someone with two braincells left would believe it true, and could feel offended by it.
The article mocks NO ACTUAL PERSON's suicide, and the author doesn't pranks on any suicide attempt of an existing entity.
It's fiction. OBVIOUS, BLATANT, fiction.
And it's humour.
I haven't read the manga myself, but I've read that Usagi kills herself at least once.
You must seriously consider Takeuchi an immoral writer for banalizing suicide for entertainment's sake on a comic book.