This is a brief, simple response and personal opinion to all this hullabaloo surrounding Derp/Ditzy Hooves and her new edited voice in MLP, sort of like a self-parody. Here, the changes are noticed in the universe, or more specifically by Twilight alone, leading to an awkward moment.
There is all this argument about how some might find her voice and characterization a bit offensive, and how others, mostly Bronies, would argue it's Censorship and such. It can be understood WHY some people were a bit put off by the first voice of Derpy, even I was a bit iffy, even though I'm not sure if it called for a new voice. But besides, her voice still sounds kind of like Derpy's and her eyes are still a bit wonky. I don't know, but here's the thing, it's NOT that important in the grand scheme of things - I personally think the fanbase is making it a bigger deal than it needs to be. It's Still the same character, after all. There are other real tragedies that are going on out there, you know. It's not the end of the world.