Picard was written by different people who needed different things from the characters, however there were occasional moments where her previous manerisms showed through.
A feral child who was not ASD could have been portrayed like Mowgli (or, for a more Star Trek reference point, Tuvok when he had brain damage). Seven gradually learns how to navigate human interaction (and how to smile, for instance) through studying and is surprised when it’s occasionally useful, a non-ASD character could have learned through interpretation of people’s reactions and would have sought socialisation rather than peace and quiet in a neatly ordered cargo bay (I’m led to believe that’s how it works anyway).