If every Doctor or Fast Food worker went on strike, society would collapse. Can't say the same about Pewdiepie, even as influential as he is today.
The beauty if a capitalistic society is that we can enjoy the benefits of both!
We rely on ambitious people to benefit society in a number of significant ways. You can't oversell the importance of a doctor. But, people need escapism too, and those who decide to develop video games and television shows OR review/analyze video games and television shows ARE serving a purpose.
Plus, not all creators are just playing games or whatever. They're researching. They're writing and performing scripts. They're putting themselves in front of the camera. The ones who aren't doing it on their own have entire teams of people to help edit and present the content. It's production.
People might see ASMR as bullshit, but perhaps a doctor, lawyer, engineer, or soldier benefits from having some kind of media that helps them sleep. Making tens of thousands of dollars by whispering into a microphone might seem silly but it serves a purpose, and it is a legitimate calling for some. Doesn't matter if it's not as prestigious as being an actual therapist.
The reason I say there are no "real jobs" is because the importance of jobs is subjective. I mean, yeah, the jobs holding society together are on a complete different level, but all the possible jobs and services below that level are arguable in their significance based purely on point-of-view.
I don't mean to get into a huge argument about this, by the way. I just want to be fair to people that are attempting to go into business for themselves in ways that current technologies allow.