That's not the premise at all. This isn't about the ability to extract a 1-1 ratio
That's literally what the post is about.
At what ratio of the loaf would the baker be free? 10%? 50%? 90%?
The post implies that the baker would only be free at 100%. Since it just says "he was paid less than the whole loaf". At no point in the post was stated the size of the slice.
If the post wanted to communicate what you believe it is communicated, it could say something like:
You are not free if you aren't fairly compensated for your labor
Or
You are not free if you don't own the oven you are baking on
Or whatever else that is not objectively wrong.
But this post instead decided to go with an "iam14andthisisdeep" quote instead so leftists can masturbate to it and the right can ignore it as ridiculous. Changing the opinion of absolutely no one.
It is true that land is not obtained by labor, but it is still a limited resource needed for production, so if someone owns it, that someone will most of the time only agree other people use it in exchange for part of the final product. But you can take land out of any equation in this conversation if you want. The post is still nonsensical.
I can agree with you that the bottom 50-9X% of the population is compensated less than the labor they provide. But that doesn't change the fact that a baker will never earn a loaf of bread for baking a loaf of bread.