If you want to blame someone for this, blame Mozilla, but honestly, it's probably just an innocent mistake. This search app seems rather new (I just noticed it the other day, too) and probably doesn't get much usage, which I suspect is why it's not hooked into all the main app preferences yet. Jumping the gun to criticize Google here is... unfortunate.
For comparison, here's what the Google Search app looks like: https://play.google.com/store/apps/details?id=com.google.and...