You can just as easily write a sci-fi where the protagonist upload is the Siri/Alexa/Google equivalent personal assistant to most of humanity: More than just telling the smartphone to set a reminder for a wedding reception, it could literally share in their joy, experiencing the whole event distributed among every device in the audience, or more than just a voice trigger from some astronaut to take a picture, it could gaze in awe at the view, selectively melding back their experiences to the rest of the collective so there's no loss when an instance becomes damaged. The protagonist in such a story could have the richest, most complex life imaginable.
It is impactful, for sure, and worthy of consideration, but I don't think you should make decisions based on one scary story.
QNTM on the other hand doesn't have to work hard or be such a good plot-writer / narrator to be convincing. I think the premise sells itself from day one: the day you are a docker container is the day you (at first), and 10,000 github users (on day two) spin you up for thousands of years of subjective drudge work.
You'd need an immensely strong counterfactual on human behavior to even get to a believable alternative story, because this description is of a zero trust game -- it's not "would any humans opt out of treating a human docker image this way?" -- it's "would humans set up a system that's unbreakable and unhackable to prevent everyone in the world from doing this?" Or alternately, "would every single human who could do this opt not to do this?"
My answer to that is: nope. We come from a race that was willing to ship humans around the Atlantic and the Indian ocean for cheap labor at great personal risk to the ship captains and crews, never mind the human cost. We are just, ABSOLUTELY going to spin up 10,000 virtual grad students to spend a year of their life doing whatever we want them to in exchange for a credit card charge.
On the other hand, maybe you're right. If you have a working brain scan of yours I can run, I'd be happy to run a copy of it and check it out -- let me know. :)