"But making people feel like they like you is pretty easy."

For an extrovert, yes. :) Or for the introvert who knows these things and knows how to do them credibly. For some of us, it's neither easy nor obvious.

I have, of course, noticed these things too, in school- and work situations... If you are talkative, it's OK, but if you're not, you are "weird", "aloof", "arrogant", or people simply think you dislike them. Yes, you can learn to make superficial conversation, but personally it all feels really fake to me.