Earlier quoted context omitted.
My analogy is to look at your computer. Screws are essential, but you can probably go without a few and if one breaks you will just throw it away and get another one. A graphics card is expensive, and the computer might still work in some core ways without it! Yet that you might try to get repaired and go through an annoying RGA process to get a new one. Which type of worker is the screw and which one is the graphics…
The analogy is ok if you only consider the capitalist's point of view. Screws don't need health care not do they have children that have to pay for college. If you want to also consider the worker's point of view, you need think of things like cost of living vs salary and unionizing. Computer part analogies are much too naive for that.
Sense you seemed to miss the point. Capitalists dont care about you. The dirty secret though is that communists/socialists view you as a cog in a machine too. Every large system will.