He, and not she, was not put in any crush cage, ever, Naam Suk is happily living with his mother, presently in Surin, see

http://www.elephant.se/database2.php?elephant_id=5572

Theres a big gap between reality, and politics and propaganda.
But then again, some people prefer to lie, and live in a world they constructed, rather than in the real one. And by doing so, they often try to manipulate other people to share their thoughts, opinions and ideas.

The film Lek is constantly showing is already some years old.
And it doesn’t reflect a normal training for a baby elephant.