Okay, it's not a given that authors can be anti-social. In fact, some are marvelously out-going and really socially inclined. Some authors are inherently good marketers - a gift that many of us do not possess or do not exercise. It's certainly not that authors avoid contact with their readers unless of course they're world famous and people tend to go all fan-boy or fan-girl over them in public places.
Actually, I'm not speaking of being really "anti-social" today as a personality trait. I'm kind of taking a jab at authors who don't tend to socialize with other authors who . . . let's just say don't have the sales numbers they do to indicate a particular "success" level. Remember high school cliques? Yeah, like that.
Well-known authors tend to forget what word-of-mouth can do for the "less successful" author. Believe me, I'm not advocating speaking up for any authors whose work does not appeal to them, but to suggest an author on a personal public forum or type of social media can boost that lesser-known author's credibility to all kinds of readers. It's simply a kind gesture to help another writer whose appreciation for those recommendations is pure gratitude.
Just something to consider for those who've "made it".
Father, thank you for your gifts and talents. May we always honor you with how we incorporate them into our lives, and help us to remember to be thoughtful to others all along the way of this journey we call life. Apart from you, we can do nothing. In the Name of Jesus, Amen.