It's a no brainer for Larian, get a decent VA, who also happens to have a decent Twitch following, which means that his followers are more likely to buy the game, they end up making money from hiring him.
I wasn't going to say it, but yeah, it's strategically brilliant.
Cohh Carnage and Matt Mercer - you have to get the streaming and online community aboard. Released a month before Starfield so they would get a full month of streaming *advertisement* before that game releases.
AND people are sick of Diablo, it's really perfect timing, people are looking for the content.