Yes, fans didn’t want the game to change, which includes voice acting.
^^ This is a search of this forum for the word retcon. There are tons of threads from the months prior to Blizzcon regarding the proposed changes to the story. Most (not all) of the discussion was players asking that the story NOT be changed.
Obviously, new story and dialogue would need new voice acting, right? If they’re not changing the story and dialogue, they don’t need to change the voice acting. Pretty straightforward.
I’m sorry if your language / localization is different, I have no idea about that.
My entire point linking the PC gamer article above, and now the forum search, is to show that Blizzard not having a changed story and dialogue is not another example of Blizzard failing to deliver for W3 Reforged.
In fact, abandoning those proposed changes is literally what tons of people were asking them to do.