He’s not kidding, and he’s right. You’re no more obligated to stay with any particular employer than an employer is to keeping you, so smart employees will stick with,an employer until they have learned something useful, then move on as quickly as possible.
However, in regards to your concern about wages, the problem with Walmart is not the wages. You do earn enough to survive.
The real problem is that the ability, to learn useful skills, has been strangled. We’ve created a situation where the only way to learn marketable skills is to completely be able to devote years of your time learning a skill, with no guarantee of employment. Not everybody has the capability to take those years off, so they are trapped.
There used to be a time where you could have no skills whatsoever. However, if somebody hired you, and you might have to start sweeping floors or shovelling manure, so to speak, over time you would gain marketable skills. Unfortunately, thanks to government interference by subsidizing education, it has become uneconomical to do that.
The real solution is not to just keep bumping up the minimal wage, but to make it possible for people to acquire marketable skills in their spare time, as they are able to do it, however they can. If all they got is 15 minutes per day, a couple of times a week, they should, over time, be able to use that somehow to improve their situation
Used to be able to get a job at the local factory, farm, machine shop, construction site, restaurant, whatever, and work your way up. A lot of these jobs either a) don’t exist anymore or b) have been filled by droves of illegals or c) priced out by unions or d) have been marginalized by the high bar of the margin between working vs. gov’t bennies.