Can you use the expression "unreliable narrator" as a metaphor to describe a real person?

Can you use the expression “unreliable narrator” as a metaphor to describe a real person who’s relaying unreliable information?

For example:

“TikTok alleges that they don’t send their user’s personal information to China. They are an unreliable narrator in my opinion but you should keep that in mind.“

Edit: just in case some of you don’t know, unreliable narrator is a term from literature for when the narrator presenting the story isn’t credible. Here’s a link to the wikipedia page if you want to read more:
https://en.wikipedia.org/wiki/Unreliable_narrator