There is nothing wrong with the so-called dull, uninteresting, and boring folks. And them being utterly interesting with lots of things to say isn't something awesome either.
Unfortunately, readers and readers-turned-writers have a bigger vision of the world, of people, their personalities. They have already dealt with different kinds of personalities in books. So, it would be rather surprising if they get disappointed with the so-called mediocre, boring folks. In fact, writers and readers can exhibit much empathy towards these tribes. The problem is gathering a bunch of like-minded people around you with whom you can discuss a variety of interesting things, not just books. And that won't happen, especially in workplaces, in college, in your neighborhood, and family circles.
Life would be boring if everyone was like-minded. We need doctors, nurses, maids, engineers, construction workers, gardeners, shoe makers, plumbers, grocers, accountants, entrepreneurs, quilters, soldiers, teachers, and other people. There is so much to do to keep the planet running! So, different people's brains are wired in different ways for all good purposes. Many professions don't require you to be a chataholic.
Conscious silence turns you into a reservoir of energy.
Some quotes I love, may not be in exact words...
"Avoid noisy people, they're vexations to the soul. " - The Desiderata
"Today I will encounter people who are egoistic, talk too much, but I won't feel surprised or shocked for I cannot imagine a world without such people." - Marcus Aurelius