Hi TheCyborgSlayer,
Regarding your iPhone camera, you can view details for when you may see this alert in the quote below found in the article here: iPhone parts and service history - Apple Support
"You will see an Unknown Part message if the part installation is incomplete or if the part:
- Was replaced with a nongenuine part
- Was already used or installed in another iPhone
- Isn't functioning as expected"
As no recent service completed on your device, it's possible the camera hardware isn't working as expected. However, as mentioned in the article "These messages don't affect your ability to use your iPhone, its battery, display, or camera."
To help run a diagnostic and to further assist, reach out to Apple Support directly using the links below.
Contact - Official Apple Support
Contact Apple for support and service - Apple Support
Best.