I find it tacky, but I also don't really care if it's on anon. People want a secure way to blow and steam and go.

I'm also confused what your definition of trauma dumping is, though? Is it just mentioning trauma or triggering things, or long drawn out detailed stories? The former depends on context, the latter case I'd agree. But lately I've mainly seen anons using their trauma to guilt trip or control people because of their triggers.