iPhone 12 Series Peeling. Question and Caution

I am trying to live my fullest by not using any case/protector on my black iPhone 12 Mini. A month ago, wiping the camera with fiber cloth causes peelings near the camera lens. Just today I took it out of my zippered pocket and caused some peeled paint on the side đŸ¥²

I use my 12Mini carefully, more than how I ‘tortured’ my SE. The SE is still intact and looks perfect.

I think 12 scratches too easily, is it factory defect? Anybody using 12 series without case having the same issue? thanks.