There was never a statement that the game would be fully voiced, that I've seen, or seen mentioned before now.
But there was and I DID see it.
I read Larian themselves answering on Twitter to two youtubers who were doing a playthrough (and "dubbing" the game in real time for laughs) that the final game was going to be fully voiced.
Of course, plans must have changed at some point, since Larian retracted recently.
Not sure why you are acting as if it was some outrageous baseless claim, considering this incidentally is exactly where their recent "We considered it at some point, but we realized it was too much" comes from.
But then, I view voice acting in games as a luxury
Well, YES, it mostly is. Also, one that can add a lot to the charm and mood of a game if properly done (as it can also detract if done poorly, but they did mostly a great job with the D:OS Enhanced).
Except if they are considering a console release, as they did with the first one.
In that case voice over becomes virtually mandatory.
Then again I'm not sure if the first one sold well enough for them to care about that segment of the market.