Haha I didn't even notice it. But you made me realize how incredibly inconsistent the feedback "button" is in the used-to-be-AOSP apps
Clock has it in the three dot menu on the main screen AND in the three dot menu in settings
Phone only has it in the main three dot menu, but it's completely missing from settings (oh and the Settings->Accessibility screen ignores Material You colors for some reason)
Contacts has a decoy three dots menu that only contains Select and Select all buttons, the feedback option is hiding in the account switcher (and is once again missing from settings)
Messages once again hides the feedback button in the account switcher, but it doesn't have a three dots menu so it makes sense. No feedback in settings
Calculator has it in the three dots menu and doesn't have any further settings
and finally, Camera: tap the quick settings button, tap More settings, scroll to the bottom and boom, the feedback button.
I know this is completely useless information, but I was curious and thought it would be a shame to just forget my findings 5 minutes later
I mean, I'm not a fan of the iOS UX, but I feel like they're doing pretty good with consistency, and would like it if the system app Devs took a slice of inspiration from that (though not necessarily everything else).