Yeah. "Shortly after" is relative here. The incident that preceded the crash happened in 1993 (13 years prior). The Lear incident happened just 4 months after the crash. I don't know if controllers would (still?) be using binoculars to check every single take off, months after the crash?
The fact still remains that visually assessing from a distant control tower where an aircraft is lined up at night when the angle subtended between the correct and incorrect positions is very small is not guaranteed.
Agreed.