"Militant" is a poor choice of words. There also hasn't been the mass exodus from the workplace that some people have the impression of. The vast, vast, majority of businesses are open and operating normally.
As for lower paying jobs, I don't really blame workers that are looking at other careers. Many businesses were very quick to lay off or fire employees the instant the pandemic hit, yet they are shocked that when they call employees to come back to work a year later some tell them no thanks. Additionally, at the lower end wages have definitely been far behind cost of living and inflation increases for 30 years. Companies enjoyed the profits of underpaying employees for many, many, years, and there does seem to finally be a correction in the marketplace for the lesser skilled jobs. Many fast food or retail jobs (not in major metro cities where cost of living is high) across the country in most areas have been paying $8-9/hour still for over 20 years. The marketplace is saying that is no longer acceptable and is correcting itself. This is one reason why minimum wage laws are kind of irrelevant, the market will adjust naturally one way or another. Burger King will start paying $15/hour nationwide before their restaurants sit idle because they are still trying to pay $9/hour in a market where people won't work for that anymore.
As a side-note before conservatives decry the outrage of paying employees a decent wage, $15/hour is less than babysitters in parts of the EU make.