Scratches could be on your camera lens protector, not your camera lens
Samsung also mentions that Galaxy S23 series users might see a scratch on a lens protector, forget that they are using such protection, and assume that their camera lens is scratched. As a result, they go to an authorized service center wasting their time and perhaps some money when all they need to do is remove the lens protector.
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The manufacturer also points out that a camera lens protector and some cases that cover the camera lens add an additional layer of glass that can lower the image quality of photos and videos. And if liquid and foreign objects get caught between the lens protector and the lens, image quality can also be negatively impacted.

A third-party case for a Galaxy S23 phone could obstruct the microphone used for phone calls and audio/video recordings