It's opt-in by default so you can't "bypass" it unless you are aware that you can turn it off. If you don't turn it off, it will continue to scan your photos, and upload the data to Apple, whether you use the Photos app or not. (And, by the way, if the option to "learn from this app" is enabled (which is again, by default opt-in) iPadOS / ios also will be intrusively data collecting how you use that alternative camera app too ...
It's opt-in by default so you can't "bypass" it unless you are aware that you can turn it off. If you don't turn it off, it will continue to scan your photos, and upload the data to Apple, whether you use the Photos app or not. (And, by the way, if the option to "learn from this app" is enabled (which is again, by default opt-in) iPadOS / ios also will be intrusively data collecting how you use that alternative camera app too ...