Yoshida then commented that players have the tendency to develop a bias where players will stick to the voice they feel comfortable and any changed disrupted the "used-to" feeling that they have developed over time.
Therefore Yoshida commented that people should give it time and get used to the voice first, if people STILL couldn't get used to it after all and request changes, then they can comment and request it.
The sounds have been changed as early as in 5.01 - literally the first small patch of the expansion. Therefore players have had FAR MORE time to get used to the new sounds, than they ever had to get used to the original ones.

What the hell is he talking about, lmao.