Are brackets supposed to be placed in the middle of the tooth?

I just got braces the other day, and I am very upset. The ortho put the brackets on my top front 6 teeth very close to the bottom of the teeth. I asked him why he did this and he said so that they line up with my bottom teeth. My bottom teeth brackets are all in the middle, by the way.I've seen about 20 videos of orthodontists explaining and showing how to properly place brackets and they all said that the brackets should be centered on flat teeth, 4mm height. Is this the correct way?Am I right?

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