...yes, and that's because? Please to be finishing your thought, Sahib. Is it unecessary, impractical, a fraud, or ???
Its just a gimmick. Like punching a person holding a telephone directory on their chest with a one inch punch
The point is that bil gee has its uses but its not a special move. Most martial art systems use similar strikes. In wing chun we employ it a little bit quicker and with more energy as part of our fighting. It is not exactly a Mortal Kombat finishing move (Down, Forward, Forward, Up - 'Fatality...'), but it can help with bridging, distrcting your opponent or in many cases causing serious damage to your attacker
But don't spend years concentrating on it - I'd ratrher be able to hit someone extremely hard than hope that my finger strike will work every time!