Almost all of the examples of 'having a hard time around other people' amount to their self perceptions not necessarily the authors actions.
It's impossible to 'look at someone like a little girl'. It's mostly likely that these people either feel insecure, or, they project certain qualities upon the author.
I have a very 'straight face' and because of lack of emotional response, people have asked 'why am I angry at them?' when I had not even a whiff of such emotion. I was literally deeply contemplating what they were saying!
Now - it there may be other tons of behavioural signals - and it's possible the author was treating someone as a little girl, i.e. not paying attention, being dismissive, condescending without knowing it - which would then give a different characteristic to that persons opinion.
And it's easy for someone to create feelings when a successful person 'pulls up in a Tesla'. Any hint at bragging/humble-bragging in any way might be taken the wrong way.
But it's a good article, at least it's good to have some self-reflection/self-awareness.