Voice acting as well is another key thing I think easy to overlook but it helps a lot with the immersion and getting invested in the world. Pathfinder Wrath of Righteous was a fun game but lack of voice acting made it a slog to get through there were what felt like paragraphs of text to read through constantly. By mid way through the game I found myself skipping over a lot of it. Imagine if tabletop roleplaying the DM handed you a stack of paper to read every conversation instead of narrating what was happening - that was kind of how I felt.
But I can’t agree with your second statement. The problem with long boring text is not the lack of voice acting’s it’s the text itself. I’m not going to listen to some guy ramble about lore that seems unlikely to matter.