Geek culture is made up. It's a brass-knuckled money-grab executed by men of excessive monetary value aiming their cash-lust at a nostalgic generation's disposable income. It's consumerism channeled through a marketable antithetical taste. It's also only as real, or fake, as "sports culture" or "yard-maintenance culture."
Geek culture needn't define you -- if it does, "the terrorists win," as the former-President, and unprosecuted war-criminal, George W. Bush, used to say.
You can buy into geek culture, the same way you can buy into any other culture, considering money is forever a demonstration of good taste. With money, comes a market, so you may wonder how to write about geek culture?
I'd rather drink poison than participate in what a balance sheet calls "geek culture." Its most visible organs are slithering, baby-mutant appendages, whacking at anyone who would get close. This is a defense-mechanism that the geek no longer needs. Geek culture needs a reboot.
How can we steer this ship?

You'll have to indulge me for a moment when I state that a lot of people reveal on a regular basis that they cannot productively reconcile their annoyance with the world around them.
There is no such thing as zero-expectation. That probably makes some people happy. Heck, it's roughly 96% of what a marketing department does, fostering and metering expectations. If a marketing department is doing its job for a TV show or a movie, you're going in with familiarity about what's going to happen—or what's supposed to happen. Elsewhere, if the storyteller is doing his or her job, they're aware of expectations, and while not necessarily playing up to those assumptions, they do not treat the crowd as a bubbling mug of stupid. The astute storyteller makes precipitous speculation a vital part of the story's existence and validation. They use every tool, character trope, and twist on the norm that they can to accomplish this. This unsteady line-walking is a dangerous place to be, both creatively and financially. Either half could collapse the other if it's not handled with precise aplomb. I imagine every time somebody gets to minute-15 of a very expensive movie on release weekend and grumbles, "I have no goddamn clue what is happening," somebody in marketing is killed, and then probably hollowed out to be used as a pinata at the next Dia De Los Muertos party.