What insult?
The larger point is that working harder and working MORE are not the same thing. The entire discussion is that no one should have to work overtime or numerous jobs just to make ends meet.
And also, in your story about the guy who worked so hard, it doesn't sound like he worked any harder than anyone else, he just worked more, and saved up enough money to buy himself a house. Good for him.
But did he really get ahead? You say he refused to move into management. So he didn't ever get ahead, even though he could have taken a management role and likely cut his hours down. This is not an example of someone working harder and getting ahead. It's an example of someone working more and saving up to buy a house that probably cost well under a million and a half dollars, which is the median price of houses in my area right now.
Let's remember in 2022, it's a lot harder for someone working a service industry job to do what this man in your story did.
I can tell you lots of stories of hard working people who worked so hard day after day, but they were still on food stamps despite it, and then died young from having broken bodies and minds. My father in law was one of them. But you want to pretend those people don't exist.