Germans, Please Help Identify This Information

I read a thread in a Chinese forum just now titled The German Teaching Assistant Angrily Leaves China: Your Education Is A Crime!

The thread revealed that the German was heart broken when he saw 4-year-old Chinese children tried hard reciting Pinyin (Chinese phonetic symbols) and 5-year-old children studied hard in learning arithmetic of how to add and subtract. The German said that in Germany 8-year-old children there only know how to sow seeds, grow flowers and weed grass, or know how to simply assemble or disassemble toys; they don't know 1+1=2 at all! But their ability when reaching 18 years old is more powerful than that of 28-year-old Chinese adults! (I've quoted the original Chinese text below in case you know Mandarin-in white color. You have to drag your mouse to show them)

I doubt that an 8-year-old German child doesn't know how to calculate 1+1=2! Please confirm me it is a lie!

Thanks in anticipation.

[quote]
愤然离开中国的德国助教：你们的教育是犯罪！

他看到4岁的孩子背诵拼音，5岁的孩子做加减法时，他心都碎了。在德国，8岁的孩子只会播种、栽花、除草什么的，会简单的拆卸玩具，根本就不知道1+1=2。但是他们18岁后的能力，远比中国28岁的人能力强大。[/quote]

PS

Native English speakers, please offer your grammatical and rhetorical opinion about this thread if you would like to.