Slaves could walk away by 'purchasing' themselves. Or by escaping and not getting caught. Or by being freed by masters/authorities for various reasons.
> "And don't bother to make the argument they can't walk away for economical reasons. It's still a whole different thing."
This is the key thing. Slaves in the past couldn't walk away for economic reasons as well (i.e. many of them couldn't purchase themselves and become free). Also, today, if you're a US citizen, in order to renounce citizenship, you need to have another citizenship, which usually takes many years to get. So, it's very difficult to escape US Taxman, which takes half of your income (i.e you work half of the time for the Taxman).
Slaves today are little bit more free than those in the past. But, not by much.
Again, you're nitpicking with the term 'slave'. It's like saying 'cats don't walk', because they don't walk as humans. You don't have to walk as a human to be labeled as 'walking'. Likewise, you don't have to be literally in chains to be labeled a 'slave'. But, people who benefit from slave labor, like the author of the post, don't want the term 'slave' be used, because it would expose him a scumbag.
Slaves today are little bit more free than those in the past. But, not by much. Again, you're nitpicking with the term 'slave'. It's like saying 'cats don't walk', because they don't walk as humans. You don't have to walk as a human to be labeled as 'walking'. Likewise, you don't have to be literally in chains to be labeled a 'slave'. But, people who benefit from slave labor, like the author of the post, don't want the term 'slave' be used, because it would expose him a scumbag.