i mean, yea sure. but you could say that of any game that has like updated content.

the ai voices, even though the voice actors were paid for explicitly training an ai, and to allow on the fly changes and extensive callouts, were a point of contention with a sizeable part of the comunity, so this seems like a good thing all around to me. the voice actors get work, the voice lines they replace stop having that ai inflection. a win win.

I don't understand how having situational voicelines, with transparency and the voice actors' affirmative consent, would make the game "unfinished".

From what I know they Paid the Voice Actors to make lines with ai Which is fine imho

You don't buy a lot of games judging by the latter part of that statement.