What is a voluntary contract and why does it matter? In the context of r/antiwork

I've been seeing a lot of stuff about r/antiwork, a subreddit that is all about "quit culture" and the new great resignation. It's full of people talking about how they quit their jobs and how work in general just isn't working for them--no pun intended. The people on the sub tend to view their culture as a rebuttal to the whole "capitalism" thing; it seems that the place is rather a hotbed for socialist and Marxist conversation. The people on the sub tend to gravitate towards a critical view of how western economies are fundamentally "exploiting" the workers through poor working conditions and low pay.

However, I have recently heard a good interpretation of this situation: the fact that r/antiwork is actually the signal of a free market working as it should. The very fact that millions of people can quit their jobs on a dime and speak freely about it is--contrary to what people on the sub seem to think--capitalism working exactly as intended. This "great resignation" thing is actually a reaction of a free market to the fact that wages are, in general, too low. Since less people are willing to work the same number of jobs, employers have been raising pay, and will continue to raise pay until they are able to fill out the positions that they need. This is a net benefit to the people who are doing those jobs. 

What I must stress is that this is a grassroots movement. This is not a violent revolution. It isn't even an organized strike. It is a million individual people deciding that the benefits side of their social contract isn't worth what they are paying. And here's the critical thing to remember: not a single one of them is facing actual legal consequence. Or at least the vast majority of them. This is economic liberalism. A world where work is a voluntary contract between the worker and the employer, kept valid only until one side decides that it is not worth it anymore. That is the fundamental basis of a free market, and by extension, capitalism. 

Also I think the main problem is just the fact that people got tired of the workplace being like a Dilbert comic. Bad bosses and managers can do a lot to bring a company down. You can see hundreds of posts poking at that fact on the subreddit.