VA is a real pain, especially for an indie game dev.
It completely changes your workflow because you need to have your script ready and finalized to record all the lines all at once. Say good bye to iterative development. Want to tweak something or add additional lines? Yeah, that is going to cost you.
I think "AI" based voice generation (well data driven voice generation, I will die on the hill that it should not be called AI as it is not intelligent) will absolutely have a place for prototyping games and having filler voice acting.
The problem is though, that good VA can absolutely make or break a game. Will players really tolerate "AI" voices? I hope not! There is a reason certain famous voice actors are paid good money: it is an art.
People will watch certain shows or play certain video games simply because they have a voice actor that they like in. You can't get that emotional attachment form generated voices.
Voice carries so much more information than just the text. It gives hints to the emotional state of the speaker, their background and education, their intentions. "AI" can never replace top-tier voice acting from humans simply because that would require a general intelligence.