That's an interesting perspective. I don't share it, however. My perspective is this.
After several decades of autistic folks being deeply embedded in my life, I've come to view the spectrum as a normalcy that all of us reside on. Our challenges aren't equal but our list of possible factors is.
In that view, HFA is a shorthand we use to indicate someone exhibits enough degrees of enough factors. I see HFA as a pointer to a cluster, not a person.
Two of those factors are a dearth of connection and authenticity. I believe our poster exhibited both. The reason I referenced HFA: It's the term I know that also points to a strong presentation of both of those. If you have a better, I might adopt it.
Regarding a dearth of connection, it's something I'm intimate with. I've managed to develop some empathy but it's like trying to grow a garden without seed, soil, air or sunlight.
But if someone is there, I know they've already brought what they have to the table. I need to adjust my expectations.