I purchased a baby BP
Here is the answer on his behavior.

Hatchlings and Juvy can be defensive (most are) , to them YOU are a predator, they naturally grow out of this phase as they get older and bigger.

Best is to pay attention to the body language and act with confidence, striking is not unusual for animals that age and this should not discourage you, and if you do get tagged not a big deal either it feels like paper cut.