I would argue that since resources are indeed finite it is a shame to waste them by including voice acting in an rpg, since not only does it take up time and budget, but so drastically limits other options such as dialog choices and character creation choices. As well as that if you are going to limit yourself that way it would be better (and bolder) to include races no other games let you play as rather than the same old same old. Although depending on how far along they are it may be a moot point with resources already being spent. On the other hand the majority of issues discussed on forums like these are already probably decided so might as well make the pitch.
I would counter that the immersion gained by voice acting is immensely much more worth than the word salad which oftentimes is the result of an overemphasis on text. Almost without exception the added dialogue choices are there to provide an illusion of choice and/or are nonsensical time-fillers and adds little to a game, even detracts from it.
You make it sound like you haven't played neither BG nor DOS2. Even twenty years ago, Baldur's Gate had voice acting. Albeit somewhat limited, it was still one of the key features that made the game a classic. The voice acting in DOS2 was absolutely superb. The talking heads encounter alone is the most hilarious acting in any RPG/video game. A text delivery of the same would have been dry and wasted in comparison. DOS2, who was a Kickstarter game published by Larian themselves, featured one million words, 74,000 lines, and 1,200 different characters with 80 actors to do them all. This tally was added on by the Definitive Edition released about a year later free of charge to game owners. How "drastically limiting" do you imagine a million+ voiced words are? On the other hand, I can easily imagine falling asleep reading all of that. Besides, the budget of BG3 will be far larger than DOS2. This is a combat driven role-playing game, not a text adventure!
Voice acting is a separate field to programming and thus much less of a bottleneck, making it a matter of resources - not really of time. Resources well spent, as important or more important than outstanding graphics in my opinion. There are over 40 playable races in D&D 5e, then add subraces to that total. In order for your kobolds and goblins to be realistically added, then half a dozen more popular alternative races would likely be added before them. Dragonborn (will v.likely be implemented as part of PHB), genasi, goliath, aasimar etc. All requiring graphics, voice acting (likely) and a fleshed out storyline.
