网友的改写完全正确，换句话 because of… 完全可以被强调：
He didn’t come because of his illness.
It was because of his illness that he didn’t come.
又如：
It was because of poor health that he retired at the age of fifty. 正是因为健康状况不佳，他50 岁时便退休了。
It was because of the
job that he had taken the flat. 正是由于工作上的考虑，他才租下了那套房子。
