Built in Camera Defective

I purchased a Macbook air 13" Feb 2023 online from the Mac store. I trusted everything will be working fine with the computer but only 3 months ago when I tried to turned on the camera and it was not working. I went to Apple store to find out what was wrong and turned out the camera is defective. The technician said for the model that I purchased camera and the screen are together. If I want to change the camera it will cost roughly 500 USD. The store said if I would have come in to fix within the warranty it will be free.

Now I would like to know does Apple actually deliver consumer a defective product or I did something to the camera which I did not even use the camera until I tried to turn on 3 months ago??!!