No, I don't agree with that.Catching one neph runs an animation that takes 30 seconds (more or less). Do you agree with that?
Catching one Neph takes about 5 seconds of menuing (Give Them Fluids).
When done correctly, you can do this constantly in the same spot as the Neph you catch instantly spawns in a new Neph, saving the "Running around trying to get fucked" time.
The real problem in this time wasting is releasing them all has to be done manually.