Stop Badware regularly flags sites that issue spurious security warnings in an attempt to mislead users. Facebook certainly falls under that description.
Can you give me an example? Sites get entered in there if they try to install malware on people's machines. I think it's straight-up ridiculous to say that FB's text there is an attempt to mislead users. It gives good advice that most people don't keep in mind at a funnel point that's known to be relevant to an enormous number of phishing and other attacks.
Do you actually believe the things you're saying? I'm struggling here.
But you didn't make a case either that Facebook is attempting to mislead users, or indeed that their actions are misleading users at all. A number of sites gate outbound traffic for security reasons, and the language Facebook shows users is totally consistent with this - it doesn't read "You are about to visit a dangerous site", instead it warns users in generic language of phishing, etc. The error here is attributing malice to a bug or annoyingly-implemented feature. That feature clearly falls short of any reasonable "badware" criteria.