Notice the tab on the left is slightly raised, compared to the tab on the right. You can tell that the insert is off-balance based on the peg in the center; not being completely perpendicular to the plate.
The damage really isn't that terrible, but you'll never know if the 0.5mm difference in action is the reason why you dropped a game-winning one-frame link combo. So with that, I will dropping the five bucks for a replacement restrictor plate!
If you need to know how to replace the insert, check out this video: