or that people deserve a certain wage because they need it rather than because the value they add to the job
It’s not especially hard to understand. I don’t think any of us celebrates the fact that some people are failures in this society. To borrow a line from Jordan Peterson, nobody looks at the homeless on the streets and thinks, “Yay, the system is working!” Most of us probably believe that there is a way it could have been avoided.
Liberals are especially worried about these worst-case scenarios and want to try and solve them. It’s actually quite noble. The only issue is that you cannot solve problem merely by appealing to compassion, and liberals are bad as this.