Passkey are still accessible in travel mode

I turned on “travel mode” for my social media and bank vault, then deleted all the apps from my phone before traveling.

Later, I re-downloaded the apps—and was still able to log in using my passkey.

So… what’s the actual point of travel mode if I can still access everything which is marked as easily? Am I misunderstanding how it’s supposed to work, or is this expected behavior?