The phrase " facebook anonymous viewer profile hot " usually refers to

If someone is interested in you, they will not just view your profile anonymously. They will:

Avoid unless you’re just testing public profiles. For true anonymous viewing, use Facebook’s own “Incognito mode” in a browser (for public content) or simply log out. Nothing on the market reliably views private Facebook activity anonymously — no matter how convincing the “lifestyle and entertainment” branding sounds.

Facebook explicitly states they do not allow people to track who views their profile and that third-party apps cannot provide this functionality [24]. "Others" in Stories:

Bottom line