Its the priced of competitiveness. All the things we miss were all part of what made the cars competitive at the time. Long burnouts were to put rubber down; now we glue the whole surface. Dry hops were to make sure the car had starting line hook; now its a precise mathematical calculation on the timing and pressure of the throwout bearing and weight on the clutch fingers. Throttle wacks to seat the clutch have been replaced with multi-discs all with a specific hardness and thickness based on the desired tune-up for the condition.
There has always been science involved with what drag racers do- its just taken on many forms over the decades.
Right now, the intent is to rotate the Earth and put everyone on the trailer. Only difference between 1955 and now is that there are a million more ways to be insanely precise, and all of those things have to work perfectly with each other or you become second place.