LOL.
That is one of those parts that has an undeserved reputation of failing. I had one fail in 1978, but I really think it was mostly due to road salt.
What it doesn't (generally) do is give you a problem like this. It's a simple wire coil covered by ceramic. If they fail, they pretty much just fail and the failure is easy to spot because the car starts, but when you let off the key to the run position, it dies. (Exception is the double ballast resistor used in earlier electronic ignition conversion kits).
Basically, it's the throwaway facebook type answer given by guys whose uncle's buddy's car once had a bad ballast resistor. Your car isn't doing this... There's a list of things that could be causing the problem, but as said, throwing parts at it doesn't solve it... or teach you how to diagnose a problem.
Still... a good extra part to have in the glovebox... Easy to switch if the car acts like I described. I carry one, because you never know.