I mean, if an auditor publicly reports an audit finding that is ignored by the company and his ethics demand its reporting, is he branded a "whistleblower"? I do not think so, instead it is an "auditor finding". Why does that not apply here?
It kind of dovetails with how pathetically organized IT in general is from a professional standpoint. Lawyers, Doctors, ... ?Accountants? and the like have centuries-codified procedures, principles, and the like for ethics. You generally don't get to hire one of those and tell them how to breach ethics (now, there are a lot of corrupt lawyers and a lot of corrupt accountants see: Arthur Andersen).
The exploit industry has the 0day and x days of forewarning process, so there is that, but the fact a security consultant/professional gets accused of whistleblowing when... um, isn't that sort of the point? You hire a security consultant kind of like an auditor. And if auditors find major failings and they aren't addressed, aren't they supposed to report them?
I'm pretty sure the security IT industry does not have even accountant levels of professional conduct and organizations.
As IT subsumes and infiltrates, now to the point that fundamental bill of rights / human rights are dependent on secure and functioning IT systems, it gets... a bit more important. Arguably more important than the ethics around accountants and doctors. Lawyers, because they deal with the law, are probably more important still, but it shows that IT security may be rising in import to that level.