Now you are nitpicking.
There is a difference between letting the altitude vary but sticking somewhat to around a certain flight level, and letting the aircraft pitch up and down to keep a constant speed with either full- or idle- thrust.
I am sure you know what I meant.
Good to hear that you are still with us, most people seems to confuse moderate turbulence with severe. And since your choice was to declare an emergency and descent, I am sure you would agree that it not really a realistic option to maintain .76 and cruise happily along whilst the aircraft is sometimes uncontrollable.
..0.76 (NG) is a good ball park but not set in stone.
I'll agree as a compromise, to end the discussion
But I will maintain that setting .76 accomplishes nothing in light turbulence.