This is not uncommon for the children of Japanese people living in the West, particularly when they have married non-Japanese. They pick up the spoken language via osmosis but the written language…not so much. It is, as I said, very hard and cannot be mastered without extensive study. Many of these hafu, as the Japanese refer to them, nonetheless enjoy successful careers in Japan, presumably usually in environments that don’t require them to read anything.
As to your English example, it…doesn’t really work? There are languages that aren’t dependent on word order for their meaning, but English - shorn of the grammatical signifiers retained by many of its brethren - is not one of them. Latin is famously largely order-independent; another topical example would in fact be Japanese! Its particle-based system for annotating subjects and objects mean their position is unimportant; the only real requirement is that the verb comes at the end.