Yes, but it's the style that usually tips off a very proficient reader. It's bad in "subtly"* different ways than what a mediocre writer produces, and you know from experience it's unreliable. The mediocre reader doesn't even notice it's bad, or at least not bad in a different way from the other stuff they read, so they don't even question the reliability.
*"Subtle" is subjective, so you might think it's glaring, but many obviously do not.