That's fine. I do it too.As was said, many want the camera on all the time. The hidden camera is only good if it’s only used for parking. And I would think that that would get dirt dried on the camera also when it’s hidden away.
But in that case it would just flip out. And you would just select cleaning mode and give it a wipe if it got dirty.
But most days, I only use it when backing up, and so turned in behind an emblem would be nice.
Then again, I live in Canada where everything freezes and sticks.