Asisreo
Patron Badass
That's not true. Rangers just can't get most by nonmagical means in their favored terrain. Which gives you a perfect way to actually have a Ranger party use the Ranger's expertise in Survival without instantly not getting lost.If there's no chance of failure, or consequences, then what's the point of doing it? No matter what the ranger say they'll reach their destination without issue.
Sprinkle a bit of magic in the forest. It doesn't have to be as punishing as The Lost Woods ala Zelda but it could be something as simple as a magical mist or ever-changing terrain. The book even gives spells that an NPC could have cast to make a certain area magically influenced.
Because, honestly? If you're not putting them through a magically inclined area for the purposes of getting lost, there really wasn't any threat of being lost to begin with.