This book is addressed (primarily) to people who make their living from connecting with other people, and from making introductions between their connections.
The book is full of such personalities and it explicitly describes many of them as otherwise mediocre and without certain professional inclination, who learned how to benefit from such intermediary activities.
Do you want to seek interesting people directly by yourself or through such individuals? Can they do it better than you? Do you want them to know so much about you to annoy you with deliberate signs of attention (eventually intended to be monetized)? It's up to you to decide. The book gives you a peek into their world and methods.
The book is quite light on useful insights but it has some grains of them here and there, although so scarcely scattered that you may just not get there through the content well watered with numerous mundane stories and common sense deliberations and recommendations.
Two stars from me for such grains and bringing the topic up. Although the book considers the concept of "superconnector" a novel one, it's actually the same old match-maker whom the authors tried to put in new clothes. The topic can actually be quite interesting but needs deeper consideration in my view ...