There's a bunch of high-impact leaks that had a rather inscrutable nickname - from the front page of https://haveibeenpwned.com/, I certainly wouldn't be able to tell what does being affected by a "Collection #1" breach mean, or "Exploit.In" or "Anti Public Combo List".

That said, HIBP specifically does provide that information which is more than actionable, and that being the most prominent of these services, I'm not so sure what the complaint is about really either...