The problem is that there is no interaction with other meanings of tutorial, asking on the forum and watching a video is less effective than actually being helped live while playing, that is, what the tutorial in the game is offering, but in a flawed way, that is, plain boxes of small text. What I mean is that you cant compare doing something while being instructed and being instructed and then you are imminently being tested. Voicing the tutorial will make the former a lot more present in the current tutorial in the game.
Obviously, 1 actor for each available language will be costly, but it will increase accessibility of the game to new players.