Beat Saber also started using sprites for the blocks instead of geometry at roughly the time they released the Quest port. It's really immersion breaking for me, I couldn't play the game for ages and even now I have to actively try to avoid thinking about it. I know it's a small thing but ugh.

(You can prove this by putting a song on lower speed and no fail, and turning your head to watch the blocks as they go past. They look like they're rotating to face you.)