So is the moral lesson of Kes (1969), frequently shown in classrooms, to never get emotionally invested in anything, because it will ultimately get its neck snapped and thrown in a dustbin?

It's an authentic story of a reality, which fucking loads of people had to deal with, and often reality is more telling than fiction or any moral lesson. Sometimes, it's about giving people (younger kids) the ability to think for themselves and ask questions themselves, instead of spoon-feeding them filtered shite to protect them. That approach, to me, is flawed and often more damaging. You've gotta have a balance of the two, you can't just be presented with films like "E.T. the Extra-Terrestrial" by [Steven Spielberg](https://www.google.com/search?num=10&sca_esv=47422b062f7ec537&sxsrf=ANbL-n6s8UDEjk0dsqsIUkB4WwaGNWmzPg:1770510548766&q=Steven+Spielberg&si=AL3DRZHmwLjWhgnaPB3UTu10R6S5qNLXiQiKMeezfKyB1FMsRvbZlGuTYm6jgTyRouMsbM3nu3QrBvZNJc2-jsQ4dfngIEbBoJSVHC2r6WZGoqVCckUXpcjxTsMY2jumf5sT0cCRPBkk-Lm6I8E_kX_Od3Wm4URISMjDA0O7VSGJKyAGU5Ig1usjGjFQGq49vqv7336FqrKz&sa=X&ved=2ahUKEwjG_9Hi0ciSAxWDWEEAHVtDJ-cQmxN6BAgrEAI&cshid=1770510685439166) in a nice bow, you also have to see other perspectives, i.e., "The Thing" by [John Carpenter](https://www.google.com/search?num=10&sca_esv=47422b062f7ec537&sxsrf=ANbL-n5XtcMDBPC0PLJFaGqKy1uD0Wh84Q:1770510766778&q=John+Carpenter&si=AL3DRZHmwLjWhgnaPB3UTu10R6S5qNLXiQiKMeezfKyB1FMsRqx7He2JqA9vxT3vq96nXM3Lu8HU01hcrQXN35m6vpZZlovWZhx-wXOERhywta7M-1JaCXOljIYZwizbdOgwBCDZ1TVYo1nBkSssK7h2cPTbCCudj1au3WKGrfLSirrjFpOdqHpjJ1e_zorea3_NLiprTd_M&sa=X&ved=2ahUKEwjsp8zK0siSAxWQT0EAHV7EB58QmxN6BAgfEAI)