Re: Not really

Did every child laborer run a (voluntary) lemonade stand?

Read again. It is of little importance what arguments were given in 1850 or 1950 about education and labor, because we are not living in the same society. What is of importance is how society is dealing with this now - and it is dealing by writing fines and citations for lemonade stands. I will not stand by that, will you? Will anyone on GC with a straight face and a claim to love children would?

My point was that this notion that Industrial Age child laborers were working because they all wanted to be there is bunk. Most of them were forced to work either by their parents or by circumstances.

Irrelevant. Work is a right whether or not the jobs are pleasant or the circumstances proper. You claim to be a feminist: go back and read the arguments why women should be allowed to work. And keep in mind that pay gaps and labor rights gaps between genders still exist in many places and lines of work.

And the reason they were allowed to work wasn't because society respected their rights; quite the opposite actually. They were cheap labor and easy to control. [Emphasis mine]

Then change that. It's no different to putting an AOC because minors are cheap (not as in prostitution, even as in "normal" relationship expense) and easy to control.