Here's how you determine who brings more value to society: If they were to just stop coming to work tomorrow, would society keep going?

If every ticktocker quit tomorrow, would society still function? Yes. Things would go on like nothing ever happened.

If every surgeon quit tomorrow, would society still function? No, people would die, they would become timid and afraid of being hurt, because minor injuries would be fatal and life changing. Not only that, we would lose centuries worth of knowledge and be forced to learn it all from scratch again from books instead of trained surgeons.

The danger in your logic is it leads to thinking like this: "ticktockers provide more value than surgeons because they can scale their reach, therefore in order to maximize total value to society, we can maximize the number of ticktickers and we don't have to worry about surgeons. We can just offset the lost value by the value brought by all the ticktockers."

That's an obvious bad idea and straw man, but people really try to go down that slippery slope in non-obvious cases. The realm of education comes to mind. "MOOCs are more valuable than universities because they have more reach, therefore in the future we will close down universities and only have MOOCs" is something I've heard seriously proposed before.