Yes, to an adult, it's a choice because he/she knows the difference. But to a kid, it that a choice by himself/herself or by his/her parents, or by the ideology group he/she is in? To some extent, we chose a kind of education to be mind washed.
Sure, so it's the same for the kids. We never expect a 7-yrs old mature enough to make such judgement. But the choice is still there with their parents. Does that choice exist for these folks in Xinjiang Uyghur regions? Is it free to join/leave or is it forced?
Folks in Xinjiang are free to leave if they choose to be "educated". By the way, do you really think you got to choose the education you want? Can't education transform your mind before you can make such choice? Ever read "Educated"? Do you know how much effort there is to realize that there is alternative choices? Do you remember reading anything that says good things about communism or socialism? Why is it always portrayed badly here? Is it really that bad or someone for some purposes makes it look totally bad?