One of the strengths of the thread would be to flag poor hiring practices.
If we can’t do it there, can we flag it somewhere else?
The problem with posting complaints publicly is that the community (and we moderators) can never know the full story, so there's a risk that it could unfairly tarnish a company's reputation. It could also be gamed by competitors or others trying to hurt the company.
We're not a court of law so we can't be a forum for litigating disputes.
But if you send us an email containing any details of abusive conduct, we can consider taking action just the way we would against anyone else abusing HN.
Otherwise, I don't think there's any magical platform here on HN just for complaints, thankfully.