Excellent points. I had to go look through the rebirth issues to see that he was indeed looking at his mother's files when got struck by lightning.
I like that Idea that Reverse Flash sent that subliminal thought to Allen and implanted his costume to play with Allen. I see your point to inattention leading to mistakes in the battlefield. We don't really know how a person interacts with the Speed Force. If it's constant or needs to be accessed, so a simple distraction can cause that fatal mistake.
I see your points about the rebirth and I understand where it goes. It also leads to this conclusion. Reverse Flash would not exist if it weren't for Flash. That was his dilemna in life: inability to kill Flash without killing himself.
But the Reverse Flash killed Allen's mother, leading to Allen in that fateful night studying her file getting struck by lightning. Chicken or the egg; who created who?
I came to believe that when Johns wrote Rebirth; The Reverse Flash had already gone back in time and changed Allen's history by killing his mother. Case in point the Flashpoint: Reverse Flash One shot. Reverse Flash understands he cannot kill Allen but can hurt his loved ones and change his life as long as it eventually leads to the lightning strike.
If that is already re-written history, the original one ( this one is before Crisis on infinite Earths) was when his parents were still alive and dies not from Reverse Flash's hands. So Flash's attempts should not have Fracture time so drastically leading to Flashpoint. But maybe since this was the first time that Flash was actually able to change time and he bungles something. Or maybe only Reverse Flash's negative speed force allows time alteration and the regular speed force is more damaging.
I don't know. I suppose an explanation can be thought of, that explains the existence of Flashpoint. DC needs it to lead into the New Universe.
One thing for sure, It certainly is nice to have a conversation and discussion about something with someone with the usual @#$#.