Who exactly? Its matter.

Also isnt there is above discussions and some video links with properly rotating grass? Hmm or it was in another thread...

Yeah, my bad, you were right: Chrome uses 2D sprites for grass, NOT polygons, i.e. polygonal foliage. I went back and played some of it yesterday and as it turns out, I just wasn't remembering that detail properly.

These leads me to deduce that the designers at Ubisoft Montreal made the mistake of applying an outdated principal in game design for Far Cry 2 when it came to adding patches/swaths of grass in the game; 2D sprites need to rotate to maintain alignment with the player's POV, whereas 3D polygons do not. Far Cry 2 was one of the very first open world first person games to feature fully 3D polygonal foliage, so it would make sense that game designers at the time could make mistakes like that, since their college education on 3D design wouldn't have taught the use of such techniques for open world games.

TLDR: it's a design flaw, not a glitch.