I use Index controllers as well, but I haven't had the same issue with the hands. They're certainly not 100% correct with the angle but it's close enough, and this game doesn't really require your hands to be in a certain pose/angle, it's mainly your arm movement and position. What headset are you using?

I'm using the Valve Index. The difference in angle can clearly be seen when pressing the Index Controller system button when at the main menu (compare the blue line to yellow line).

You're right that the angle has no affect on gameplay, it just make the hands/wrists look kinda funky. It's weird that I've been able to fix this issue in other games fairly easily, but none of the settings I play around with seem to adjust the pointing angle for this game.

Yeah, the menu angle is certainly a bit weird, but again it's just a minor annoyance. I highly doubt we'll ever get native Index controller profiles, so it's just something to live with. Sorry it bothers you