I understand your concern, but i can't help but feel the exact opposite when viewing it. Also, have you met teens? They felt insecure long before smartphones.
Cameras help us capture and store the world around us and high-end cameras are amazing. Bringing lots of that tech to phones means we all can capture it better.
Maybe you don't, but many people photograph every moment of their life. And every family reunion and wedding and social gathering is full of people taking pictures to remember what grandma looks like today, and how happy she is with grandchild. Capturing that in vivid detail and with great images is crucial to re-living those moments, and really improves the experience of viewing photos for lots of peoples.
I can't find them now, but ive seen research that says taking a picture helps you remember an event. Idk if its true, but if true, maybe forgive the people for accidentally interrupting trying to take a picture - its how they remember.
Here Apple says look at what this new iPad camera can do on TikTok and then they move on to look at how much we care about your privacy in the same event.