Personally, I don’t see any point to remove that from Wanikani. Hiding something doesn’t make it disappear, and it won’t make any difference to the problem of what exists, in Japan and elsewhere. Actually, I think the opposite would be better for everyone, more exposure for the subject and perhaps people learn to talk about problems before a situation escalates to point of suicide.
And as @Epona pointed out, it’s not WK’s job to think what trigger word might trigger someone. If someone feels uncomfortable about subjects they should look for plugins that can block them.
Removing those from every place just makes those subjects more abstract and harder to talk about, and what/who that helps?

